Answer:
a free encyclopedia...but probably best not to use it cos apparently anyone can just edit it
Wikipedia is an online encyclopedia that operates through a process called crowdsourcing, which involves soliciting contributions from a large online community. It sources its information from a range of resources such as government reports, newspapers, and other well-regarded media organizations. It has become a very significant source of knowledge production.
Explanation:Wikipedia is an online encyclopedia that is the result of a crowdsourcing effort. Unlike traditional encyclopedias such as the Random House Encyclopedia and the New Encyclopædia Britannica, which are written by experts and provide detailed information, Wikipedia allows thousands of volunteers to add and correct material. This process, evident in digital platforms like Wikipedia and Kickstarter, is known as crowdsourcing. This method of gathering services, ideas, or content bypasses traditional routes and instead harvests the collective knowledge of a large online community.
Wikipedia collects and presents information in the form of articles on various topics. These are sourced from long articles, reports from major newspapers and well-regarded media organizations, government and international agency reports, well-sourced nonacademic books, and more. It has become a significant source of knowledge production, as explained by Danah Boyd in her work, 'It's Complicated: The Social Lives of Networked Teens.'
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Proteins, which are compounds made of nitrogen-rich amino acids, create waste products in the body of animals that must be eliminated. Which toxic compound is the primary concern of animal waste systems?
A. Urea
B. Ammonia
C. Ammonium
D. Nitrogen
Answer:
Ammonia is the most toxic waste. Urea is the least
how can mutation in a gene lead to a new trait in an organism ?
Answer: D. The mutated gene codes for a protein that causes a new trait
Explanation:
A mutation is a change in the DNA sequence that can occur from multiple causes. For example, by errors during replication or by the action of mutagens such as UV radiation, among others. When a mutation occurs, if not repaired, it can lead to the production of a different protein. This is because genes code for amino acids, which bonded together form proteins. A change in a DNA gene base can lead to code for a different amino acid (or even adding a new one or causing another to be lost). This alteration can lead to the synthesis of another protein involved in the expression of a trait, and giving rise to a different characteristic, which can be beneficial or harmful.
80 POINTS HELP PLS BRAINLIEST
1. What does a red shift mean? Blue Shift?
2. Describe the Big Bang Theory. According to this theory, how old is the universe?
3. Scientists believe the universe is expanding. What is the evidence that supports this?
4. Describe a nebula.
5. Describe the 3 types of galaxies. What is a barred spiral galaxy?
6. What is a light year? How far is Alpha Centauri from Earth?
7. Describe the universal law of gravitation. Be sure to include gravitational force between two objects.
8. Describe the planets’ orbits around the sun.
9. What is the asteroid belt? Where is it located?
10. Describe rotation and revolution of Earth. What determines an Earth day and year?
11. How do galaxies exist?
12. Compare and contrast the inner and outer planets.
13. What causes the seasons?
Answer:
1. red shift: he displacement of spectral lines toward longer wavelengths (the red end of the spectrum) in radiation from distant galaxies and celestial objects. This is interpreted as a Doppler shift that is proportional to the velocity of recession and thus to distance.
2. blue shift: the displacement of the spectrum to shorter wavelengths in the light coming from distant celestial objects moving toward the observer.
3. The curve changes noticeably about 7.5 billion years ago, when objects in the universe began flying apart as a faster rate. Astronomers theorize that the faster expansion rate is due to a mysterious, dark force that is pulling galaxies apart. One explanation for dark energy is that it is a property of space.
4. A nebula is a giant cloud of dust and gas in space. Some nebulae (more than one nebula) come from the gas and dust thrown out by the explosion of a dying star, such as a supernova. Other nebulae are regions where new stars are beginning to form. For this reason, some nebulae are called "star nurseries."
5. Elliptical, Spiral, and Irregular. Two of these three types are further divided and classified into a system that is now known the tuning fork diagram.
A barred spiral galaxy is a spiral galaxy with a central bar-shaped structure composed of stars. Bars are found in between one third and two thirds of all spiral galaxies. Bars generally affect both the motions of stars and interstellar gas within spiral galaxies and can affect spiral arms as well.
6. a unit of astronomical distance equivalent to the distance that light travels in one year, which is 9.4607 × 1012 km (nearly 6 trillion miles).
4.367 light years is how far they are from eachother.
7. Newton's law of universal gravitation states that every particle attracts every other particle in the universe with a force which is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.[note 1] This is a general physical law derived from empirical observations by what Isaac Newton called inductive reasoning.[1] It is a part of classical mechanics and was formulated in Newton's work Philosophiæ Naturalis Principia Mathematica ("the Principia"), first published on 5 July 1687. When Newton presented Book 1 of the unpublished text in April 1686 to the Royal Society, Robert Hooke made a claim that Newton had obtained the inverse square law from him. In today's language, the law states that every point mass attracts every other point mass by a force acting along the line intersecting the two points. The force is proportional to the product of the two masses, and inversely proportional to the square of the distance between them.[2]
8. Newton realized that the reason the planets orbit the Sun is related to why objects fall to Earth when we drop them. The Sun's gravity pulls on the planets, just as Earth's gravity pulls down anything that is not held up by some other force and keeps you and me on the ground.
9. The asteroid belt is the circumstellar disc in the Solar System located roughly between the orbits of the planets Mars and Jupiter. It is occupied by numerous irregularly shaped bodies called asteroids or minor planets.
10. Earth spins around its axis, just as a top spins around its spindle. This spinning movement is called Earth's rotation. At the same time that the Earth spins on its axis, it also orbits, or revolves around the Sun. This movement is called revolution.
A day is approximately the period of time during which the Earth completes one rotation around its axis.
An Earth year is 365 days. It's the time that it takes the Earth to orbit the Sun. Each planet takes a different amount of time to orbit the Sun, so the length of each planet's year is different to ours. See if you can match up the planet to the length of year below.
11. One says that galaxies were born when vast clouds of gas and dust collapsed under their own gravitational pull, allowing stars to form. The other, which has gained strength in recent years, says the young universe contained many small "lumps" of matter, which clumped together to form galaxies.
12. The outer planets are further away, larger and made up mostly of gas. The inner planets (in order of distance from the sun, closest to furthest) are Mercury, Venus, Earth and Mars. After an asteroid belt comes the outer planets, Jupiter, Saturn, Uranus and Neptune.
13. The seasons are caused by the tilt of the Earth's rotational axis away or toward the sun as it travels through its year-long path around the sun. The Earth has a tilt of 23.5 degrees relative to the "ecliptic plane" (the imaginary surface formed by it's almost-cicular path around the sun).
Explanation:
A dam is built that changes water flow nearby. The water flowing through a marsh completely stops. What is the most likely effect of this change?
A. The marsh will become less productive.
B. The marsh will have more oxygen.
C. The marsh will grow more plants.
D. The marsh will have more photosynthesis.
Answer:
A: The marsh will become less productive
Explanation:
Option A is the correct answer because, if the water flow changes to the point where no water is able to enter a certain area, most plant life will die out.
There are a few plants that can survive with very little water, but not enough to sustain a whole ecosystem.
The marsh will not have more oxygen, because underwater plants acquire oxygen through the water surrounding it (oxygen diffuses into the water).
The marsh will not grow more plants, because water is the key factor needed in order for plants to grow, and due to no plants being able to sustain themselves, the rate of photosynthesis will also decrease.
How do producers create energy for survival?
A. through photosynthesis
B. through decomposition
C. by eating animals
D. by eating plants
*A*
Common unused materials like water, carbon dioxide, and other minerals is used to make sugar through photosynthesis. They obtain the energy through the sugars.
Through photosynthesis create energy for survival.
How do energy producers make enough to survive?The process by which plants convert carbon dioxide, water, and sunshine into oxygen and sugar-based energy is known as photosynthesis.
What are the types of photosynthesis?There are two types of photosynthetic processes:
Oxygenic photosynthesis.Anoxygenic photosynthesis.To know more about photosynthesis :
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5 Points
What is term for the process of gathering information through images taken
at a distance?
O
A. Global positioning
O
B. Topography
O
C. Remote sensing
O
D. Cartography
SUBMIT
What would most likely happen if green plants were exposed to longer days of sunlight?
A. The mitochondria would produce less energy .
B. The chloroplasts would produce more energy.
C. The cell wall would become thicker.
D. The vacuoles would quickly shrink.
Answer: B. The chloroplasts would produce more energy.
Explain why autonomous underwater explorers (AUE) will provide entirely new kinds of information about ocean processes
Answer:
Oceanographers are already very skilled at gathering information about large-scale ocean processes, but small-scale processes have largely been inaccessible. ... They allow the deep ocean to be explored.
Answer:
Explain why autonomous underwater explorers (AUEs) will provide entirely new kinds of information about ocean processes.
The AUEs will allow scientists to gather information about local and small-scale processes for the first time to study ocean phenomena in greater detail.
Explanation:
Ocean Exploration
Edge 2020
Creating new things to solve problems and improve life depends on the close interaction of which two fields?
A.science and technology
B.engineering and geology
C.conservation and research
D.medicine and surgery
Answer: A.science and technology
Explanation:
Science and technology is the correct option. Science include the knowledge of the natural processes and events that occur in the universe. It includes the predictions and explanations for the cause of natural processes. The technology include the collection or group of techniques and methods can be used for the synthesis of goods and services. The technology can be used for the accomplishment of objectives and for the purpose of scientific investigations.
The knowledge of science can be used and implemented to develop the technology. The technology can be used for the synthesis of new things and solving the problems associated with the daily life.
Consider the following hypothesis:
Soil type affects the germination of radish seeds.
Which of these should the experiment do in order to best test this hypothesis?
A.
Measure the rate at which radish plants grow after their seeds germinate
B.
Measure the average depth at which germinating radish seeds were planted
C.
Compare the percentages of radish seeds that germinate in different types of soil
D.
Compare the average numbers of radish seeds that germinate in different states
Answer:
C
Explanation:
You are testing the affects of different soils on the germination of seeds, therefore, you must compare different types of soil. The other answers don't have correlation to different types of soils, and are incorrect.
Answer: C. Compare the percentages of radish seeds that germinate in different types of soil
Explanation:
The hypothesis you are trying to prove is that the soil type affects the germination of radish seeds, to do this you would need to compare the germination rates of radish seeds in different soil types to see if there is an actual difference on the germination rates of the seed.
In humans, freckles (F) on the skin are dominant to no freckles (f). If two parents are heterozygous for the trait, which statement below best describes their chances of having a child with no freckles?
a
It would be extremely rare for the freckled parents to have a child without freckles because freckles are dominant.
b
The parents will most likely have three children with freckles before having a child without freckles.
c
Every time they reproduce, the parents have a one in four chance of having a child without freckles.
d
If the parents already have three children with freckles, then they are more likely to have a child without freckles.
Answer:
It might be C but sorry if I'm wrong
Two heterozygous parents for the dominant freckle trait (Ff) have a one in four chance of having a child with no freckles (ff) using a Punnett square to determine the probabilities.
Explanation:When considering whether two heterozygous parents can have a child with no freckles, we utilize a Punnett square to determine the possible genetic outcomes. Since freckles (F) are dominant over no freckles (f), a heterozygous individual will have one of each allele (Ff). When these parents have children, each parent has a 50% chance of passing on either the F or f allele.
Using a Punnett square to illustrate this, we would see that there are four possible genetic combinations for their child:
FF - Child with frecklesFf - Child with freckles (heterozygous like the parents)fF - Child with freckles (heterozygous like the parents)ff - Child with no frecklesThus, the correct answer is that every time they reproduce, the parents have a one in four chance of having a child without freckles (option c). This is because the chance for each genotype (FF, Ff, fF, or ff) is equal when both parents are heterozygous (Ff).
When the landmasses of the British Isles and Scandinavia are fitted together, mountain chains and rock types _____. form a nearly continuous belt do not line up match only in elevation show differing structure and ages
Answer:
form a nearly continuous belt
Explanation:
When the landmasses of the British Isles and Scandinavia are fitted together, mountain chains and rock types form a nearly continuous belt.
Answer:
form a nearly continuous belt
Explanation:
a substance that influences the reaction but does not participate in thereaction is a
Answer:
Catalyst
Explanation:
Catalyst is a substance that influences the reaction but does not participate in the reaction.
scientific information on climate change
Answer:
Climate change is a broad term which describes the drastic environmental shifts that the earth is experiencing due to both human behaviours and natural processes. Although the earth naturally goes through patterns of environmental change, humans accelerate those changes by putting pressure of the planet. Greenhouse gasses (especially CO2) are expelled by humans through our transportation systems, burning fossil fuels to use as energy, industrial manufacturing, and mass meat farms. These gases cloud the atmosphere, enveloping the earth in gas and creating a “greenhouse effect” that traps the sun’s heat and warms the planet. As the planet unnaturally warms, ice melts and increases the sea levels, ecosystems change to adapt to the new temperatures, animals go extinct under environmental pressures, and natural cycles are interrupted. Additionally, human air, water, and land pollution through trash and chemical byproducts also corrode ecosystems and contribute to climate changes.
Hibernation enables an animal to save _____. range energy time space
Answer:
Energy
Explanation:
Hibernation allows an animal to save energy during a time in which there is not a large food source.
This generally occurs to carnivorous as well as omnivores in which their prey is "dead" during the time, or have migrated.
An example of an animal that hibernates during the winter is the Grizzly Bear, who generally eats to full before they hibernate for the winter.
~
Answer:
energy
Explanation:
Which of the following would be considered a source of error in an Experiment
Answer:
only three house flies were collected for an experiment
Explanation:
i just did it :)
Which describes a gene bank?
a place where endangered species are undisturbed by humans
an institution that provides funding for genetic research of endangered species
a secure place where seeds, plants, and genetic material are stored
the part of the cell that stores a blueprint for an organism's traits
Answer: The Answer is Option 3 (A secure place where seeds, plants, and genetic material are stored.)
Explanation:
They made Gene bank's In an effort to conserve agricultural biodiversity, also gene banks are used to store and conserve the plant genetic resources of major crop plants and their crop wild relatives, Also for animals, this is the freezing of sperm and eggs in zoological freezers until further need. So after that information its clear to Choose the answer (C)
Carl Linnaeus developed a two-word system for naming organisms. It is called .
Answer:
Binomial Nomenclature
Explanation:
Carl Linnaeus developed a two-word system for naming organisms. It is called Binomial Nomenclature.
Answer:
Carl Linnaeus developed a two-word system for naming organisms. It is called .
The scientific name for polar bears is Ursus maritimus.
Ursus is the
and maritimus is
the
.
Explanation:
on the planimetric map the ___ tells you the number of inches on the map for every actual mile that the map represents
The answer to this question is scale. The scale is used to determine the actual distance between two points in a planimetric map.
What is a planimetric map?This map only represents the horizontal position of features. This is also called by others the line map. This usually consists of man-made and natural features.
These are from aerial shots by the use of modern technology. This map’s common features are street and water centerlines, sidewalks, culverts, utility lines, building footprints and vegetation. Sometimes, there are also other useful data attached in this map like titles of the properties, owners, assessed value, etc.
It is because of these, this map becomes a storage of valuable data which can be easily and quickly accessed.
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Where do electrons get their energy in photosystem I?
A. From NAD and NADPH
B. From energy in photons
C. From ADP and ATP
D. From glucose in the Calvin cycle
When chlorophyll or carotenoid molecules absorb light and enter a photoexcited state, electrons in Photosystem I acquire energy, hence option b is correct.
What is the light reaction?Through an electron transport chain, the excited chlorophyll electrons are moved from photosystem II's electron acceptors to photosystem I.
Two photosystems—Photosystem II and Photosystem I—are present in photosynthetic eukaryotes and cyanobacteria.
An electron is excited and lost from a PSII reaction center in chlorophyll as a result of light energy (P680).
Therefore, Photosystem I uses light energy to move electrons from ferredoxin on the stromal side of the thylakoid membrane to plastocyanin on the lumenal side of the membrane, hence option b is correct.
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A brown coat is recessive in Labradors, while a black coat is dominant. If two hybrids are bred, what percentage of the offspring will have black coats?
A. 25%
B. 50%
C. 75%
D. 100%
Which of the following occurs as proteins form?
A. Chains of DNA codons and RNA anti codons form.
B. Specific codons pair with specific anti codons.
C. DNA strands form a backbone of sugar rings and phosphate groups.
D. Peptides bond to nucleic acid molecules.
Answer:
B. Specific codons pair with specific anti codons.
Explanation:
The nucleotide sequence of mRNA serves as a template for protein synthesis. During the process of protein synthesis, the mRNA nucleotide sequence is read in the form of triplet codons. The tRNA with the complementary anticodon sequence joins the mRNA.
There is base pairing between codon of mRNA and its complementary anticodon of tRNA followed by the formation of a peptide bond between existing amino acid on the ribosome and incoming amino acid carried by tRNA.
The four main spheres of the exterior of Earth are the _____. atmosphere, cryosphere, hydrosphere, and lithosphere anthrosphere, atmosphere, cryosphere, and biosphere atmosphere, lithosphere, biosphere, and hydrosphere atmosphere, lithosphere, biosphere, and gemosphere
Answer: lithosphere (land), hydrosphere (water), biosphere (living things), and atmosphere (air).
Explanation: Hope this helps!!!
The correct answer is C. Atmosphere, lithosphere, biosphere, and hydrosphere.
Explanation
Earth is a planet that belongs to the solar system. The earth is composed of several elements that constantly interact forming a system, that is to say, it is composed of interrelated and dependent parts, so if one of the parts changes, the others are modified, altering the entire system. The main parts of the Earth are its subsystems that are the lithosphere, the atmosphere, and the hydrosphere. These subsystems fulfill specific functions that allow the development of life on Earth. These subsystems are related. Each system has a particular function, the atmosphere contains oxygen and carbon dioxide; the hydrosphere contains all forms of water on earth, and the lithosphere is made up of mineral salts and support for living things. At the same time, these three subsystems allow the existence of the biosphere, that is, the subsystem referring to all forms of life on Earth. So, the correct answer is C. Atmosphere, lithosphere, biosphere, and hydrosphere.
Where do the respiratory and circulatory systems meet?
A. In the heart
B. In the muscles
C. In the lungs
D. In the brain
Answer:
Option C. The lungs.
Explanation:
Alveolis are the air sacs in the lungs which main function is to get oxygen into your bloodstream and carbon dioxide leaves the blood.
The alveolis are located in the lungs, and it's where the respiratory and circulatory systems meet, for the reasons stated before.
Therefore, the correct option is Option C.
A magnifying glass is an example of whikh type of microscope?
electron microscope
scanning microscope
compound light microscope
simple microscope
Mark this and return
Answer:
C) Compound Light Microscope
Which nutrient tends to cycle within a single ecosystem?
Answer:
Phosphorous
Explanation:
Phosphorous an essential nutrient in the ecosystem.
Please mark brainliest and have a great day!
Identify the structures of the female reproductive system using the drop-down menus. This structure is also called the birth canal. The eggs develop and are released by the ; this is also the site of estrogen and progesterone production. If an egg is fertilized, it will implant and grow on the lining of the
Answer:
Vagina
Ovary (Pl. Ovaries)
Uterus
Explanation:
The vagina is also called the birth canal. It is a hollow, muscular tube attached at the lower end of the uterus and opens to the outside. It is called the birth canal because this is where the baby passes from the uterus to the outside world.
Ovaries are oval-shaped organs where egg cells are developed. They are located at the sides of the uterus, attached to the fallopian tubes. It is also the site of estrogen production which is also known as the female sex hormone.
Uterus is also known as the womb. This is a pear-shaped organ where the fetus will grow if an egg cell is successfully fertilized by the sperm cell. The main body of the uterus called the corpus and it is expandable, which makes it capable to hold a growing fetus.
Some cells release substances that can travel to other cells in the body and be detected by checkpoint proteins. This signals that the cell should divide. These substances are called ___________. checkpoint stimulators cell cycle enhancers targeted molecules growth factors
Answer:
Growth factors
Explanation:
Growth factors, unlike hormone, have an influence on most cells on the body. They promote cell division and differentiation. Therefore, they are significant in promoting the cell cycle. Therefore, they should be able to be recognized by checkpoint proteins that regulate the cell cycle by either promoting progression or arresting the cell cycle.
What does it mean to analyze data?
A. To support a hypothesis
O
B. To predict what will happen if a hypothesis is true
O
C. To develop a possible answer to a scientific question
O
D. To examine or interpret observations
SUBMIT
Answer:
its either c or d
Explanation:
i remember this but then again im a high school drop out
Illegal fishing is thought to account for what percent of fish caught?
A. 10-20
B. 15-40
C. 20-50
D. 50-70
Thank you!
Illegal fishing accounts for a substantial portion of global fish catches, likely falling within the range of 15-40% based on studies and reports on under-reporting and the proportion of illegally caught seafood entering the United States.
Illegal fishing is a significant problem that affects marine ecosystems and economies around the world. According to research, the percentage of fish caught through illegal, unreported, and undocumented (IUU) fishing is substantial, contributing to over-exploitation and depletion of fish stocks. Considering the report by Agnew et al. in 2009 and the data on the under-reporting of global marine fish catches, it is reasonable to deduce that the percentage of fish caught through illegal means could be on the higher end of the provided options.
Additionally, taking into account that 25-30% of wild-caught seafood imported into the United States is illegally caught, as stated by Pramod et al. in 2014, and the significant under-reporting by as much as 50%, the range of illegal catch is likely considerable. Hence, the answer to the question of what percent of fish caught are due to illegal fishing is option B. 15-40%.