Which of these would be a cause of an occluded front? a cold air mass pushes under a warm air mass
b warm air mass gets caught in between two cold air masses.
c warm and cold air meet, neither has the force to overtake the other one
d warm, moist air mass slides over a cold air mass.

Charles darwin published his theory of evolution in 1859. in what way foes modern evolutionary theory differ from the theory as proposed by darwin? a) darwin inferred that individuals can evolve, but modern generic science has shown that this is not true. b)darwin inferred that individuals do not evolve, but modern genetic science has shown that this is not true. c)modern science has disproved most of darwin's original theory of evolution, because darwin knew nothing about generations and their role in heredity. d)generic studies have shown that gene expression and other factors operate along with natural selection, but most of darwin's theory has been supported by modern science.

Select the true statements about eubacteria. most live as decomposers and heterotrophs. most only thrive in a narrow range of environments. certain eubacteria are responsible for food poisoning. eubacteria thrive in extreme environments.

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