The greatest barrier to both plants and animals for continuous inhabitation of land was ____.
A) higher water temperatures
B) their inability to regulate body temperature
C) their methods of respiration
D) their methods of reproduction
E) lower land temperatures
Correct Answer:
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Q33: A group of small, lizard-like reptiles are
Q34: A tetrapod is a(n) _.
A) extinct dinosaur
Q35: Cooksonia is the earliest known vascular land
Q36: Animals lived on land before plants moved
Q37: The earliest fish were _.
A) ray-finned
B) bony-finned
C)
Q39: Fish with muscular fins attached to the
Q40: A flowerless, seed-bearing plant is called a(n)
Q41: The evolution of the _ egg made
Q42: Therapsids have features one might recognize as
Q43: _ is the study of organic microfossils,
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