Which statement explains how convection currents affect the movement of plates?

1.Gravity pulls one edge of a plate down into the mantle, which causes the rest of the plate to move as well.
2.Heat from Earth’s interior causes lithospheric plates to collide at convergent plate boundaries, causing volcanoes.
3.Heat from Earth’s interior causes currents of hot rising magma and cooler sinking magma to flow, moving the crust along with them.
4.As convection currents drift across the oceans, they bring the pieces of Earth’s crust with them as the supercontinent breaks apart.

true, i don't really know what you're asking but from the info you provided im guessing the answer is true.

answer: decrease

a limiting factor is the one which decrease the abundance, distribution and causes extinction of the population of species in a ecosystem. here, predators including hawks, owls and snakes are the limiting factor for the population of mexican free tailed bat.   although bats are nocturnal animals as they forge for food at night these predators also may remain active during night which can decrease the population of the mexican free-tailed bats. also, these bats eat only one type of insects that are moths. the food can also be a limiting factor as all 400 members are dependent upon same type of food needs that are moths. the decrease in the moth population can cause decrease in population size of the mexican free-tailed bats.

therefore, the scenarios will most likely to decrease the population size of the mexican free-tailed bats.  

only about ten percent of the energy at one trophic level is passed on to organisms at the next trophic level. the remainder of the energy is used in life processes or lost as heat.