Why are pioneer species usually autotrophs? A. Newly established ecosystems do not usually have pre-existing food sources.

B. Only autotrophs are large enough to survive.

C. Autotrophs are usually at the top of an ecosystem's food chain.

D. Only autotrophs can survive where water is scarce.

Many farmers prefer cattle without horns because it is safer for their herds. the allele for no horns (n) is dominant to the allele for the presence of horns (n). a farmer mates a male with horns to a heterozygous female without horns. what is the chance that the offspring will have horns?

What is the next step in the process after a substrate enters the active site of an enzyme

Agriffin is a mythical creature that appears in many stories. it has the head of an eagle and the body of a lion. what role if any could the griffin have in the science of biology