SER Fill in the blank below with the vocabulary word that best completes the sentence.
is the science of naming and classifying organisms based on structural comparisons and
genetic evidence.
DONE
Intro

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.

the tricuspid valve is present between right atrium and right ventricle

idk let me see fdfdgdg