All species are either ____________ or ______________.
a. extant; extinct
b. vertebrates; arthropods
c. endangered; threatened
d. higher; lower
e. in a phylum; not in a phylum
Ans: a. extant; extinct
Biology & Microbiology
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Fill in the blank(s) with correct word
Biology & Microbiology
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What will be an ideal response?
Biology & Microbiology