Which is the first step in the life cycle of a plant that reproduces sexually?

What causes the force that pushes magma from the magma chamber through the pipe and vent of a volcano?

Greenthe fossil record is the history of life recorded byhuman observationgod.climatologists.remains of the past.

The energy required to vaporize a certain amount of a substance is greater than the amount of energy necessary to raise the temperature of the same amout of that substance by 1 degreee celcius