Land tetrapods evolved just prior to which
mass extinction?
a. Cretaceous
b. Devonian
c. Ordovician
d. Permian
e. Triassic
B
Biology & Microbiology
You might also like to view...
Cells that have an extra 21st chromosome are
A) tetrasomic. B) triploid. C) haploid. D) trisomic.
Biology & Microbiology
The central nervous system is most sensitive to
teratogens during weeks __________ of development. a. 3–16 b. 4–6 c. 4–8 d. 6–8 e. 7–18
Biology & Microbiology
Ecology
What will be an ideal response?
Biology & Microbiology
What are the possible solutions to the problem of replicating the ends of linear prokaryotic DNA molecules?
What will be an ideal response?
Biology & Microbiology