Answer:
letters b and d don't define the cell theory
A cow eats plant material like hay and grass that is full of cellulose. Cellulose is very hard to digest, so the cow relies on bacteria and other organisms that live inside them to break down the cellulose into a form from which they can extract nutrients. The ruminant stomach is vastly different from your own digestive system. Without cellulose-digesting bacteria, cows wouldn't be.
<span>The macromolecules DNA and RNA are referred to as the the nucleic acids. They are the polynucletoides, and have the nucletoide repeating monomers of a ribose sugar, nitrogenous base pair, and phosphate group.</span>
C a dog pants after running in the park