The domestication of plants and animals had which of the following effect?
a. fewer humans had access to food than before
b. humans were able to settle down and live in one place
c. types of jobs humans had became less diverse
d. trade diminished as each community became self suffiecient
e. humans became more nomadic

On this graph, the bottom horizontal line represents an ineffective price floor set above equilibrium. an effective price floor set below equilibrium. an ineffective price ceiling set above equilibrium. an effective price ceiling set below equilibrium.

Which statement describes john tuzo wilson’s contribution to the theory of plate tectonics? he proposed that plates carry parts of the seafloor. he theorized that pieces of earth move for a limited time. he suggested that the asthenosphere is broken into segments. he observed seafloor cracks similar to existing cracks in the continents.

Compare demographic and environmental effects of the columbian