Which change describes a demographic transition?
question 14 options:

a population moves from a high birthrate and death rate to a high birthrate and low death rate

a population moves from a high birthrate and low death rate to a low birthrate and death rate

a population moves from a low birthrate and death rate to a low birthrate and high death rate

a population moves from a high birthrate and death rate to a low birthrate and low death rate

What causes darkening of the skin as melanin production increases

Graded assignment lab report answer the questions below. which combinations of substances resulted in a chemical change? for each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. make a general statement about the reactivity of the metals in this experiment.

Which are evidence of seafloor spreading? check all that apply. molten material magnetic stripes continent material drilled core samples ocean water samples