Earth’s continents are constantly in motion because they sit on top of gigantic plates which float on Earth’s mantle. Energy from the Earth’s core creates convection currents in the molten layer, and the currents move the plates. Over extremely long periods of time, this movement creates new . a.
biomes
b.
plates
c.
atmospheric layers
d.
elements

Which describes radioactive decay of a substance

Which medullary index indicates a human hair? a. 0.653 b. 0.733 c. 0.516 d. 0.256

The is an estimate of the fewest number of organisms a population needs to avoid extinction. this measurement will most if the number of offspring each female in the population produces increases. if the population's this measurement will most likely increase. 1 population density, minimum viable population, carrying capacity 2 decrease, be unaffected, increase 3 death rate increase, dead rate decrease