A major explosion of animal diversity in which all major marine lineages were formed took place during which period?
a. Cambrian
b. Carboniferous
c. Devonian
d. Permian
e. Proterozoic
a
You might also like to view...
Fecundity is ____
a. a summary of the demographic characteristics of a population b. a group of individuals of similar age c. the average number of offspring produced d. the proportion of individuals alive at the start of an interval that die during that interval e. the proportion of individuals alive at the start of an interval that survive to the start of the next interval
Maintaining the volume and composition of extracellular fluid is an essential aspect of __________. Fill in the blank(s) with the appropriate word(s)
Which of the following is not true of tropical communities?
a. they occur at the equator b. they receive more intense sunlight c. they have a longer growing season d. they receive less rainfall than temperate communities e. they have been established for a longer period of time
Which one of the following provides the central nervous system with information about the outside environment?
A) motor division B) sympathetic division C) parasympathetic division D) sensory division E) autonomic division