List the order of event from oldest to youngest. a)K, I, I, H, P, L, M, N, O, Q
b)K, J, IH, L, M, NO, P,Q
c)Q, O, N, M, L, P, H, I, J, K
d)Q, P, O, N, M, L, H, I, J, K

Animal bodies (and even plant bodies for that matter) are complex enough that life couldn't exist without enzymes. enzymes are usually large, complex biological catalysts that are expensive to make. enzymes speed up the rate of chemical reactions without being used up during the reaction (they can be reused many times). they are highly specific in the reactions they regulate. knowing what enzymes are and how they function, why does this explain why complex life forms could not exist if there were no enzymes.

Some birds look for food near cattle and other livestock. the movement of the cattle churns up the ground, making insects available to the birds. the cattle appear to be unaffected by the presence of the birds. what kind of relationship exists between the birds and the cattle? o a. parasitism o b. commensalism o c. predation o d. mutualism

Number and variety of living organisms includes genetic, species, and ecological types