My guess is that fat-soluble toxins that may occur in freshwater ecosystems would most affect apex species in these ecosystems. This is because fat-soluble toxins are stored in the fat reserves of animals, and then bioaccumulate up the food chain. So in this case, most of the toxin is not secreted, but stored within the food chain, and bioaccumulates, with the concentration becoming higher the further up the food chain.
Answer:
passive transport and diffuision
Explanation:
it requires no energy from the cell. Examples include the diffusion of oxygen and carbon dioxide, osmosis of water, and facilitated diffusion. diffusion does not.
3. Decreased variation in the shades of red because no form of the trait is advantageous.
What is Mutation
The major source of the genetic diversity among microorganisms upon which natural selection operates is Mutation.
Hope this help
plz mark brainliest
HAVE A NICE DAY!!!
