The most complicated part of the brain is the
a. thalamus.
b. cerebellum.
c. cerebrum.
d. brain stem.

What is one way intensive agriculture can contribute to climate change? a. tree loss to agriculture increases earth's albedo b. livestock manure absorbs greenhouse gases c. large herds of livestock release greenhouse gases d. fewer trees are available to replenish petroleum stores appex

Which of the following is a true statement? a. individuals evolve to have adaptations. b. individuals have adaptations that can change over time. c. individuals have traits that may or may not make them successful at reproduction. d. populations cant evolve, only individual organisms.

Which of the following is the earliest era of earth's geologic time scale? cenozoic mesozoic precambrian paleozoic