The theory of biological evolution has never been demonstrated by using the scientific method? True or false?
The number of trout in a lake drops when the lake is polluted. The trout population later increases, but the allele frequency is different than it was before the pollution. What type of situation is this?
Answer:
The process that occurred in the lake is natural selection. In the presence of an external environmental influence such as the pollution, only the trouts that were fit to survive or in other words those that have the alleles that help in adapting to the new conditions live and increased in numbers. In such a case, one can say the fittest of the organisms survived and the corresponding allelic frequency in that population increased over time. The organisms carrying the other alleles died due to pollution and hence the overall frequency of alleles change.
Explain why the cane toad was a failure as a biological control method in Australia.
Answer:
The cane toad was a failure as a biological control method in Australia because:
-The cane toad eats many native species and often out-competes native species for food and breeding sites, leading to the decline of natives.
-Breeding habits made the cane toads a very invasive species.
Explanation:
The potato weighs 7.95 oz. how many calories is her potato?
What is most likely to result immediately after a rainforest in Brazil is clear cut
Answer:
The immediate effect of destruction of rainforest in Brazil is the global warming.
Explanation:
The brazil rainforest is present near the amazon basin and most of the amazon rain forest extends in Brazil. The Brazil rainforest as part of the Amazon rainforest provides oxygen to the earth. This acts as the lungs of the earth.
It is the home of many plant and animal species. It has two-thirds of the world's plant species. The world's 20 % oxygen comes from these forests.
If the forest will clear, then the amount of carbon dioxide gas increases. It leads to global warming and air pollution. Because carbon dioxide is a greenhouse gas and it increases the temperature of the earth. This is the immediate impact of the destruction of the brazil rainforest.
The forest is destroyed every day for various purposes such as excessive fishing, grazing of animals, and building of dams. Due to the destruction of the forest, many animals lose their habitat, which results in an ecological imbalance.
For each chemical formula, tell mee the element name in each formula and the number of atom of each element
1) H20
2) 2(CO2)2
3)C6H12O6
4)3Fe2O3
5) SiO2
6) H2O2
7) (AI2O3)2
8) 4Ag2S
9) H3PO4
The question asks to identify elements and count atoms in various chemical formulas. Elements like Hydrogen, Carbon, and Oxygen are present in these formulas with varying numbers of atoms, such as 2 Hydrogen atoms in water (H2O) and 4 Carbon atoms in 4 Carbon Dioxide molecules (2(CO2)2).
The student is asking for the name of the elements and the number of atoms of each element in a given chemical formula. Here's the breakdown:
H2O: Water, which consists of 2 Hydrogen (H) atoms and 1 Oxygen (O) atom.
2(CO2)2: This is effectively 4 Carbon Dioxide molecules. Each molecule has 1 Carbon (C) atom and 2 Oxygen atoms. So in total, there are 4 Carbon atoms and 8 Oxygen atoms.
C6H12O6: Glucose, made of 6 Carbon, 12 Hydrogen, and 6 Oxygen atoms.
3Fe2O3: Hematite, containing 6 Iron (Fe) atoms and 9 Oxygen atoms.
SiO2: Quartz or Silicon Dioxide, consisting of 1 Silicon (Si) atom and 2 Oxygen atoms.
H2O2: Hydrogen Peroxide, with 2 Hydrogen and 2 Oxygen atoms.
(Al2O3)2: This represents 2 Aluminum Oxide units, so there are 4 Aluminum (Al) atoms and 6 Oxygen atoms.
4Ag2S: This denotes 4 Silver Sulfide units, containing 8 Silver (Ag) atoms and 4 Sulfur (S) atoms.
H3PO4: Phosphoric Acid, which includes 3 Hydrogen, 1 Phosphorus (P), and 4 Oxygen atoms.
In human reproduction, ________ of the chromosomes come from each parent.
25%
100%
75%
50%
Why does salt melt frogs
Salt doesn't melt frogs; this is a misunderstanding relating to its effect on ice, where it lowers the freezing point. In a biological sense, salt can harm amphibians like frogs through osmosis by dehydrating their tissues. Understanding biological responses to chemical cues can be studied using controlled experiments.
Explanation:Salt does not literally 'melt' frogs. The confusion might stem from the way salt can affect ice and living tissue. When salt is used on icy roads, it works by lowering the freezing point of water, causing ice to melt at lower temperatures. This is due to the salt disrupting the orderly arrangement of water molecules in ice, making it harder for water to remain solid. The salts commonly used are rock salt (NaCl) and calcium chloride (CaCl2).
In the biological context, if we consider how salt affects amphibians like frogs, the concept of osmosis is key. Frogs, being amphibians, have semi-permeable skin that allows for the passage of water and certain solutes. If a frog were to come into contact with a highly concentrated salt solution, it would lead to dehydration of its tissues due to water moving out of its cells to balance the salt concentration, which could cause harm to the frog.
Experimental Design in Biology
In biology, experiments such as the one involving salamanders described above can help us understand animal behavior in response to chemical cues. To test if frogs use chemical detection for predator avoidance, a similar setup could be used where water containing chemicals from predatory fish is introduced to a frog's environment, and the frog's behavior is observed for any changes indicating detection of the predator.
a living thing which carries out the seven life processes
An organism is a living thing that carries out the seven life processes: order, sensitivity or response to stimuli, reproduction, growth and development, regulation, homeostasis, and energy processing. Each of these processes is fundamental to life and is demonstrated by all forms of living beings, from single-celled organisms to complex multicellular beings.
Explanation:A living thing that carries out the seven life processes is typically referred to as an organism. These life processes include order, sensitivity or response to stimuli, reproduction, growth and development, regulation, homeostasis, and energy processing. All organisms, from single-celled bacteria to complex multicellular humans, exhibit these fundamental characteristics that define life.
For example, organisms maintain order by having well-organized, structured bodies and cellular systems. They show sensitivity by responding to changes in their environment. Organisms also reproduce to propagate their species, grow and develop from immature stages to mature forms and perform regulation and homeostasis to maintain a stable, internal environment. They also engage in energy processing to carry out life activities.
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The tropopause is _____.
Going upward from the surface, it is the point where air ceases to cool with height, and becomes almost completely dry. More formally, the tropopause is the region of the atmosphere where the environmental lapse rate changes from positive, as it behaves in the troposphere, to the stratospheric negative one. Following is the exact definition used by the World Meteorological Organization:
The boundary between the troposphere and the stratosphere, where an abrupt change in lapse rate usually occurs. It is defined as the lowest level at which the lapse rate decreases to 2 °C/km or less, provided that the average lapse rate between this level and all higher levels within 2 km does not exceed 2 °C/km.[1] for example
Parasitism is when
one organism benefits from another without it being affected
both organisms benefit from a relationship
one organism feeds off another making it weak or killing it
both organisms are hurt from a relationship
NEED Answer ASAP!!
which answer correctly compares the krebs cycle and the electron transport chain?
A. both are aerobic and focus on breaking down organic molecules.
B.both occur in the mitochondria and result in producing more ATP.
C.both are anaerobic and occur inside the mitochondria.
D. both occur in the cytoplasm and result in producing more ATP.
Both the processes takes place in mitochondria and result in producing more ATP. The correct option is B.
What is mitochondria?Mitochondria are bilayer cell organelles that produce the majority of the chemical energy required to power the cell's biochemical reactions (mitochondrion, singular).
The mitochondrial energy is stored in a small molecule known as adenosine triphosphate (ATP).
Mitochondria convert chemical energy from food in the cell to energy usable by the host cell by using oxygen available within the cell.
The process is known as oxidative phosphorylation, and it occurs within mitochondria.
The Krebs cycle and electron transport chain processes occur in mitochondria and result in the production of more ATP.
In turn, ATP serves as the primary energy source for the majority of biochemical and physiological processes, including growth, movement, and homeostasis.
Thus, the correct option is B.
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Which term means "spying”? tension escalated divided espionage
Which of the following occurs during photosynthesis? A. CO2 is used to produce water B. CO2 is absorbed by mitochondria C. CO2 and H2O are converted to carbohydrates D. CO2 and H20 are combined into carbonic acid
Commensalism is when one organism ________ and the other is ___________.
benefits; harmed
benefits; unaffected
benefits; helped
benefits; hurt
Which of the following is a subatomic particle located inside the nucleus of an atom
Protons and neutrons are the subatomic particles located inside the nucleus; electrons, which are the smallest and negatively charged, orbit outside the nucleus.
Protons carry a positive electric charge and, along with the neutral neutrons, they provide most of the mass of the atom. The electron, which is the smallest of the three types of subatomic particles and carries a negative charge, is found outside the nucleus. Electrons orbit the nucleus in various shells and subshells and contribute to the atom's overall size.
on what does the allelic frequency in a population depend
A:Gene Pool
B: Ancestors
C: Gene Flow
D: Genetic Drift
Answer:
( D) Genetic Drift is a correct answer
Explanation:
Allele frequency in a population depend on Genetic Drift because:
Due to Genetic Drift allele frequencies is changed within a population by the error in the sampling, It results in a large change in the populations within a short period.
Allele frequency is used to measure the relative frequency of different alleles of the particular gene in the population.
An individual cell is able to make copies of its genetic information but it's unable to produce encoded proteins. this indicates a possible problem with the
Where does carbohydrate production occur in a chloroplast
Answer:
in the stroma
Explanation:
apex
Please choose the answer that describes the scientific notation for 3,134,000,000. A. 3.143 × 1045 B. 3.134 × 109 C. 3.143 × 109 D. 31.34 × 109
what is the electron structure of sodium
Making an educated guess on the results of an experiment based on your observations in the hypothesis is called making a
Why are decomposers important?
They break down dead and decaying organic material.
They return nutrients and elements to a usable form in the environment.
They consume the most energy of all the trophic levels.
Both A & B are correct.
Hans Selye called the body's response to stress:
Hans Selye called the body's response to stress the general adaptation syndrome (GAS). It consists of three stages: the alarm stage, resistance stage, and exhaustion stage.
Explanation:Biology - High SchoolHans Selye called the body's response to stress the general adaptation syndrome (GAS). The GAS consists of three stages: the alarm stage, the resistance stage, and the exhaustion stage.
In the alarm stage, the body perceives a stressor and activates the fight-or-flight response. This leads to the release of stress hormones, increased heart rate, and heightened senses.
In the resistance stage, the body attempts to cope with the ongoing stress. It adapts to the stressor and tries to maintain physiological balance. However, the body remains on high alert and may experience symptoms of chronic stress.
In the exhaustion stage, prolonged exposure to stress overwhelms the body's resources. Physical and mental exhaustion may occur, increasing the risk of illness and disease.
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A rare form of mineral that is usually very clear and brightly colored
An uncommon and clear splendidly hued mineral is known as a gemstone. The variety frequently results from minor components inside the mineral.
Models incorporate emeralds (green from chromium) and amethysts (purple from iron). Gemstones, similar to precious stones and emeralds, are exceptionally valued for their lucidity and energetic varieties, which result from explicit minor components inside the minerals. For instance, emeralds get their green tone from limited quantities of chromium, while amethysts are purple because of the presence of iron. Notwithstanding, variety alone can be questionable for distinguishing proof in light of the fact that numerous minerals can show a large number of varieties in view of their pollutions.Complete question as follows:
A rare form of mineral that is usually very clear and brightly colored is known what ?
When water percolates through the ground where does it go?
A. It becomes runoff
B. It evaporates
C. It enters and aquifer
D. It condenses
What is the difference between cellular respiration and aerobic respiration????
Almost all animals except _____ have either radial or bilateral symmetry.
sponges
tunicates
clams
insects
conversion of glucose units into starch
conversion of fructose and glucose units to form sucrose
conversion of cellulose into glucose units
The question discusses the biochemical processes of the conversion of glucose into starch, fructose and glucose into sucrose, and cellulose into glucose.
Explanation:The processes described involve the conversion of different types of sugar units. Firstly, the conversion of glucose units into starch occurs in plants as a means to store excess glucose produced during photosynthesis. This involves linking glucose molecules together to form a polysaccharide starch. Secondly, the conversion of fructose and glucose units to form sucrose is another common biochemical process. Sucrose is a disaccharide made by combining a glucose unit and a fructose unit. Lastly, the conversion of cellulose into glucose units represents the breakdown process where organisms, especially those living in the gut of animals, can convert cellulose back into glucose for their energy needs.
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what is the electromagnetic spectrum?
The electromagnetic spectrum is the range of all the wavelengths (frequencies) of electromagnetic radiation.
What is the electromagnetic spectrum?A group of electromagnetic waves that travel at the speed of light and are produced by sources of the electromagnetic field is known as electromagnetic radiation.
We can only see a small portion of the electromagnetic spectrum (EM spectrum), although there are many other types of invisible light waves.
The electromagnetic spectrum (EM spectrum) has seven different wavelength types: radio, microwave, infrared, visible, ultraviolet, x-ray, and gamma.
Therefore, in the electromagnetic spectrum, gamma rays have the greatest frequencies and smallest wavelengths since radio waves have the lowest frequency and consequently the biggest wavelengths.
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