Within any large animal population, there is a variety of traits. and between different animal populati. ons, there is a variety of traits a. never, always b. always, always c. sometimes, sometimes d. never, sometimes

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

Actinobacteria sp. are fermenting organisms (which do you use oxygen to breathe) referred to as chemoorganohetereotrophs this means they break down organic material and convert it to inorganic material. which part of the carbon cycle does this describe

What kinds of molecules can pass through the cell membrane without any problem?