The correct answer is - mass extinction.
The most dramatic extinction of large prehistoric mammals occurred when the ice age was ending. The climate suddenly changed dramatically, thus the environment changed very quickly in response. Also, there's indications that maybe a meteorite hit Greenland and caused dramatic changes in just few hours and days. The larger mammals were all very specialized animals, so even small changes in the environment are fatal for them, as seen in this case.
It is interesting though that only the megafauna died out, while the medium sized and smaller animals survived, largely because they are not very specialized but are much more opportunistic in their food choices. Some of the large mammals that died out in this period are the smilodon, homotherium, american lion, short-faced bear, mastodon, mammoth, American horses, American camels, giant sloth etc.
rewrite the following sentence to make it true.
Geologists subdivide periods into eras
Geologist subdivied eras into periods
Name the three types of muscles
Cardiovascular
Cardiac
Skeletal
Answer:
Smooth, Cardiac, Skeletal Muscle
Hope I helped!!
Explanation:
_________________ is a recessive genetic disorder that strikes young African-Americans and affects the hemoglobin in red blood cells.
A) AIDS
B) Hemophilia
C) Tuberculosis
D) Sickle-cell anemia
Expanding of matter when it is heated is known as
This is called Thermal Expansion.
Order the steps of protein synthesis.
DNA is transcribed.
Chemical bonds are formed and a protein
is produced.
Amino acids are lined up in a sequence.
A ribosome binds to mRNA.
RNA is modified into mRNA.
Step 1- DNA is transcribed
Step 2- RNA is modified into mRNA
Step 3- A ribosome binds to mRNA
Step 4- Amino acids are lined up in a sequence
Step 5- Chemical bonds are formed and a protein is produced
Please mark brainliest and comment if correct. Hope this helps.
What is the term that describes how a plant responds to gravity
It would have to be a because I know I’m right
Which of these functions would be most immediately affected by a reduction in water up take my roots which of these functions would be most immediately affected by a reduction in water uptake by roots?
•Disease resistance
•Seed dispersal
•Sunlight Absorption
•Photosynthesis
The functions that will be most immediately affected by a reduction in water uptake by roots would be Photosynthesis and Sunlight Absorption.
Water and plantWater constitutes approximately 90% of the plant weight, acting in practically all physiological and biochemical processes. It serves as a
SolventThrough which gasesMinerals and other solutesEnter cells and move through the plant. It also has an important role in the thermal regulation of the plant, acting both in cooling and in the maintenance and distribution of heat. If a plant's soil has too much water, the roots can rot and the species doesn't get enough oxygen from the soil.
With this information, we can conclude that water is used for chemical and biochemical processes supporting metabolism, which uses sunlight to split the content into hydrogen and oxygen.
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A reduction in water uptake by the roots would immediately affect the photosynthesis process. This is due to water’s crucial role in photosynthesis where plants turn sunlight into chemical energy. Other functions like disease resistance, seed dispersal and sunlight absorption won't show immediate effects.
Explanation:The function that would be most immediately affected by a reduction in water uptake by roots is Photosynthesis. This is because water is a crucial component in the photosynthesis process, where plants convert sunlight into chemical energy. By reducing the water uptake, the plant would not have enough water to carry out photosynthesis efficiently, thus affecting the plant's energy production and growth.
Disease resistance, seed dispersal, and sunlight absorption would not be immediately affected because these functions either don't rely directly on the quantity of water available, like photosynthesis does, or take a longer time to show effects of reduced water uptake.
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Which condition is a biotic factor of an aquarium ecosystem?
O amount of oxygen in the water
temperature of the water
O
algae growing on the glass
O
gravel on the bottom of the aquarium
Answer:
Algae growing on the glass
Explanation:
biotic means it's alive, while abiotic means it's not alive
Answer:
The answer is the algae one!
Explanation:
I took the K-12 test and got 100%!
Plants add water to the atmosphere though
Plants, help water get into the atmosphere through a process called transpiration. After absorbing water from the ground, plants “sweat” water vapor through their leaves to stay cool. Water can also get into the atmosphere from snow and ice.
The diagram below shows a food web.
A food web diagram showing the letter A with an arrow pointing away from it to a beetle. There is an arrow from the beetle pointing to a racoon. There is also an arrow pointing to the racoon from the letter B and an arrow pointing to the racoon from corn. There an arrow pointing from blackberries to the letter B.
If a certain organism is a producer, what best explains its position in the food web?
A: B, because organism B utilizes radiant energy from the sun
B: A, because organism A has the same role as the corn
C: B, because organism B has the same role as the racoon
D: A, because organism A utilizes energy from the beetle
(ANSWER)
Choice B, because the beetle gets energy from A. The racoon gets energy from the beetle, B, and corn. And B gets its from blackberries.
The statement (B) best explains its position in the food web.
What is food web?A food web is the natural interconnection of food chains and a graphical representation of what-eats-what in an ecological community. Another name for food web is consumer-resource system.
Moreover, the food web is a simplified illustration of the various methods of feeding that links an ecosystem into a unified system of exchange. There are different kinds of feeding relations that can be roughly divided into herbivory, carnivory, scavenging and parasitism.
Food webs can be used to study bottom-up or top-down control of community structure. Food webs illustrate energy flow from primary producers to primary consumers (herbivores), and from primary consumers to secondary consumers (carnivores).
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How can local environmental changes have global effects? a. Organisms can move from one environment to another. b. Air and water move from region to region. c. Increased carbon dioxide in one location can cause increased temperatures in other locations. d. All of the above are true. Please select the best answer from the choices provided A B C D
Answer: d. All of the above are true.
If an organism lives currently in a specific environment, it does not mean that it cannot spread further on due to changes. A good example are invasive species that under human influence have spread in many areas of the globe where they have had a negative impact on native ecosystems.
Our planet is a complex system with many interconnected parts. Thus, what happens in one region can affect many other regions as both air and water move globally. The same is true for locally released carbon dioxide that will result in a local increase in air temperature. However, this can change the global air currents or [tex]CO_{2}[/tex] itself can move and accumulate in other regions.
Local environmental changes can have global effects due to the movement of organisms, the transfer of air and water, and the increase of carbon dioxide levels. All of these factors can impact global climates, ecosystems and temperatures. Thus, the correct answer is option D - all are true.
Explanation:Local environmental changes can indeed have global effects in various ways. For instance, organisms moving from one environment to another, like invasive species, can disrupt local ecosystems and cause a chain reaction impacting the global ecological balance. Similarly, air and water continually move from region to region, carrying pollutants or heat, influencing global climates.
Moreover, an increase in carbon dioxide in a specific location can result in increased temperatures in other parts of the world, because greenhouse gases like carbon dioxide trap heat in the atmosphere, contributing to global warming. In conclusion, all of the above statements are true and demonstrate how local changes can have far-reaching global ramifications, meaning the correct answer is D.
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Which substance has a high albedo?
I don't see any options
Answer: Snow
Explanation: Eh
What two events take place during human sexual reproduction
option a and b please mark a brianlist
Answer
The answer would be a and b
I hope I helped
What human profession or career is similar to the function of the cell wall and cell membrane
The law enforcement. More specifically the government. The government lets people in just like the cell wall. It keeps all of the bad things out( bad laws/ideas) and keeps the good ones in. Just like the cell wall does to good and bad bacteria. HOPE THIS HELPS!!!
Cell wall and membrane functions are akin to security personnel and border control agents, ensuring protection and regulating passage.
The function of the cell wall and cell membrane in a cell can be likened to the roles of security personnel or border control agents in human professions. Just as the cell wall provides structural support and protection to the cell, security personnel maintain the integrity and safety of a facility or border. Similarly, the cell membrane regulates the passage of substances in and out of the cell, controlling what enters and exits. This function is analogous to the role of border control agents who monitor and control the movement of individuals and goods across borders, ensuring the security and integrity of a country or region.
What is a transgenic organism
Genes of one species can be modified, or genes can be transplanted from one species to another. Genetic engineering is made possible by recombinant DNA technology. Organisms that have altered genomes are known as transgenic. Most transgenic organisms are generated in the laboratory for research purposes.
briefly describe how other parts of the universe were formed?
1. An infinitely dense atom of matter explodes, releasing all matter in the known universe.
2. This matter clumps together forming rocks and dust; that which doesnt compact remains as gas.
3. The rocks and dust are pulled in to each other by their own gravity. These clumps get bigger and bigger, and form planets.
4. Gas and dust clouds, better known as nebulae, (sing. nebula) begin to react, clump together and generate heat. Stars are formed out of these nebulae (unsure of the process).
5. The stars, with their powerful gravitational pulls, drag in planets to form solar systems. This happens on a larger scale as well, as groups of millions of stars are formed into galaxies, huge swirling discs containing millions of stars each.
That's where we are today.
What is the relationship between the structure of an enzyme and it’s function?
Function and structure. Enzymes are very efficient catalysts for biochemical reactions. They speed up reactions by providing an alternative reaction pathway of lower activation energy. Like all catalysts, enzymes take part in the reaction - that is how they provide an alternative reaction pathway.
The enzyme has an active site. It catalyzes the substrate into the product. The more the substrate is compatible with the enzyme, the more product formation is seen.
What is the structure of an enzyme?The enzyme is proteinaceous, except ribozyme. Ribozyme is an RNA molecule that can catalyze the reaction. Except the protein part of the enzyme, they consist of organic and inorganic molecules such as magnesium, zinc, etc.
These inorganic molecules are present near the active site of the enzyme and help in catalysis. The active site of an enzyme is attached to a substrate. The substrate forms a noncovalent bond with the active site and is converted into product.
The more efficient the catalysis, the better the enzyme substrate binding. The substrate should be compatible with the active site. Apart from the active site, some enzymes have an allosteric site. It is different from an active site. Allosteric regulators bind at this site and regulate the enzyme either positively or negatively.
Hence, the function depends on the binding site and the substrate.
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bucket of dirt is a mixture of many different particles. Each kind of particle in a bucket of soil has unique properties. Here are four particles that make up soil. What property would you use to separate the four particles?
A) size
B) color
C) the way it feels
D) the minerals present
Answer:
IT IS SIZE
Explanation:
Write a paragraph discussing the relationships between the organizational levels of the environment: biosphere, ecosystem, biome, community, population, and organism
Organism:
An individual is any living thing or organism. Individuals do not breed with individuals from other groups. Animals, unlike plants, tend to be very definite with this term because some plants can cross-breed with other fertile plants.
In the diagram above, you will notice that Gill, the goldfish, is interacting with its environment, and will only crossbreed with other gold fishes just like her.
Population:
A group of individuals of a given species that live in a specific geographic area at a given time. (example is Gill and his family and friends and other fishes of Gill’s species) Note that populations include individuals of the same species, but may have different genetic makeup such as hair/eye/skin colour and size between themselves and other populations.
Community:
This includes all the populations in a specific area at a given time. A community includes populations of organisms of different species. In the diagram above, note how populations of gold fishes, salmons, crabs and herrings coexist in a defined location. A great community usually includes biodiversity.
Ecosystem:
As explained in the pages earlier, ecosystems include more than a community of living organisms (biotic) interacting with the environment (abiotic). At this level note how they depend on other abiotic factors such as rocks, water, air and temp
Biome:
A biome, in simple terms, is a set of ecosystems sharing similar characteristics with their abiotic factors adapted to their environments.
Biosphere:
When we consider all the different biomes, each blending into the other, with all humans living in many different geographic areas, we form a huge community of humans, animals and plants, and micro-organisms in their defined habitats. A biosphere is the sum of all the ecosystems established on planet Earth. It is the living (and decaying) component of the earth system
I’m not sure how to figure this out
1:
A)female
B) there is two x chromosomes
C) 21
D) error in cell division called nondisjunction
2:
A) male
B) there is a y chromosome
C) X
D) random error.
NEED ASAP!!!!
Which of the following is a chemical change?
A. Water vapor in the air turns to liquid water in the form of rain
B. The oxygen in the air forms ozone in presence of UV rays
C. Dust and soot particles being suspended in the air
D. Sulphur dioxide being released in the air
D. Sulfur dioxide being released in the air
B. The oxygen in the air forms ozone in the presence of UV rays
Based on the graph, what can you say about the amount of time it will take for the strontium-90 to decay completely?
It'll take an infinite amount of time.
The function seems to be f(x)=100(1/2)^x, which won't ever result in 0.
Cystic Fibrosis is an autosomal recessive disorder. Explain how it is possible that two parents that do not have this disorder can have a child that does.
Both parents can be carriers (heterozygous) of the CF gene, and when both pass the defective gene, the child develops CF.
Cystic Fibrosis (CF) is an autosomal recessive disorder, which means that a child can inherit the disorder only if they receive two copies of the defective gene, one from each parent. In this scenario, both parents are carriers of the CF gene, meaning they have one normal copy and one mutated copy of the gene. Carriers are typically healthy individuals because one functional copy of the gene is sufficient to produce the necessary protein.When both parents are carriers (heterozygous), there is a 25% chance with each pregnancy that their child will inherit two mutated copies of the CF gene, resulting in CF. There is also a 50% chance that the child will be a carrier like the parents, and a 25% chance that the child will inherit two normal copies of the gene, making them non-carriers and unaffected by CF.Thus, even if both parents do not have CF, they can have a child with CF if they are both carriers of the mutated gene and pass on the defective gene to the child.For more such questions on CF gene:
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What is needed for an idea to be scientifically reliable?
In order for an idea to be considered scientifically-reliable it must be supported by evidence. Furthermore, in order for an idea to be supported by evidence it must be testable; you must create and conduct an experiment that provides evidence that supports your idea. Other people should also be able to repeat your experiment and obtain similar results.
One reason common names are not useful to biologists is that they
a)require the use of a dichotomous key
b)are too long
c)can apply to more than one animal
d)are in Latin
The reason Common names are not useful to Biologists is that they can apply to more than one animal.
Solvent contains chlorofluorocarbons or hydrochlorofluorocarbons which can evaporate and damage the ozone layer. A) True B) False
The statement is - True.
The solvent do contains chlorofluorocarbons (CFC) and hydrochlorofluorocarbons (HCFC) which evaporate and enter the atmosphere. Because they are very light, the CFC and HCFC manage to get very high into the atmosphere, reaching the ozone layer in the stratosphere. They are actually the two substances that are the most damaging to ozone layer, as once they get in touch with it, they break down its structure, thus creating the ozone holes.
The ozone is crucial for the survival of the living organisms on the Earth as it is the layer that manages to stop most of the ultraviolet rays form the Sun to reach the surface. Because of that, these two substances have to be replaced quickly as the ozone layer is becoming more and more damaged, and that can eventually lead to a tragedy
Gneiss is a foliated metamorphic rock. It was formed from _____.
1.) equal pressure
2.) directed pressure
3.) confining pressure
4.) chemical reactions
2. Directed pressure
2.) directed pressure
Explanation:Gneiss is a foliated metamorphic rock that forms under conditions of directed pressure. This pressure flattens and elongates the rock in the direction of the greatest pressure, causing the minerals within the rock to realign and form distinct bands.
Foliation is created through a process of differential pressure where mineral grains break, migrate, and recrystallize due to the uneven forces exerted within the Earth's crust, often along the boundaries of tectonic plates where collision or subduction is occurring. Non-foliated metamorphic rocks, such as quartzite and marble, can also form under directed pressure but do not show the characteristic banding seen in foliated rocks like gneiss.
Monosaccharide is to carbohydrates as ________ is to protein
a.amino acid
b.fatty acid
c.nucleotide
d.glucose
A is the answer please make me the brainliest
The monosaccharide is to carbohydrates as amino acid is to protein.
Polysaccharide:
These are the polymer of the glucose or other monosaccharide such as galactose, heptulose.
Proteins:
They are the polymer of amino acids bonded by peptide bond.
Therefore, the monosaccharide is to carbohydrates as amino acid is to protein.
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The collective amount of the alveoli within the lung is called the
The (Hopefully) Correct Answer Is:
Alveolar Volume
(It's associated with pressure)
I hope this helps (and that it was what you were looking for) :)
which of the following can evolve? A) individual organisms,
B) species,
C) communities D)population
In the biological context, only species and populations can evolve because evolution involves changes in gene frequencies within a population over generations. Changes within an individual's lifespan or communities do not count as evolution.
Explanation:In the context of biology, of the following options given, only species and populations can evolve. This is because evolution involves changes in gene frequencies within a population over generations, a process which cannot occur in individual organisms as evolution is not an event that occurs within an individual's lifespan. Communities, like a community of different species in a forest, do not evolve in a biological sense, although their composition can change over time due to various factors such as migration, competition, predation etc.
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