During Digestion the "food" becomes something called Chyme. Its a semi-solid substance and then the leftovers that aren't used turn into feces. <span />
Adenine and guanine have a fused-ring skeletal structure derived of purine, hence they are called purine bases. ... Similarly, the simple-ring structure of cytosine, uracil, and thymine is derived of pyrimidine, so those three bases are called the pyrimidine bases.
I believe the answer is A. decomposition ans parasitism
Answer:
D. Refusing to take an antibiotic for a viral infection
Explanation:
