Which statement best supports why animals most likely evolved in the ocean?
a. The ocean water provided buoyanc
b. They did not require a skeleton for support.
c. Internal fluid and salt balance was easy to maintain.
d. Reproduction was independent of internal fertilization.
e. The changeable temperature facilitated natural selection.
c
You might also like to view...
In contrast to linear DNA, circular DNA replication typically:
A. has a single origin of replication. B. does not produce a replication bubble. C. occurs only at a single replication fork. D. does not produce Okazaki fragments. E. All of the answer options are correct.
It is accurate to say that neural transmission across nearly all mammalian synaptic clefts is the result of
A. neural impulses involving the flow of K+ and Na+ across the cleft. B. neural impulses traveling across the gap as electrical currents. C. neural impulses causing the release of chemicals that diffuse across the cleft. D. neural impulses traveling across the cleft in both directions. E. the calcium within the axons and dendrites of nerves adjacent to a synapse acting as the neurotransmitter.
A type III survivorship curve is characteristic
of
a. dogs. b. goats. c. hawks. d. clams. e. horses
In some areas, fluoride is added during the municipal water treatment process in order to help
A) prevent goiter. B) prevent the growth of bacteria. C) prevent the development of mental retardation. D) reduce tooth decay.