A fish may lay many hundreds of eggs. Not all of those baby fish survive long enough to reproduce. Darwin described the battle of these fish to live to a reproductive age as the:

answer: a) a compound microscope has a greater magnification ability than a simple microscope.

explanation:

the answer would be knowledge about cars!

primary succession occurs in essentially lifeless areas regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. secondary succession occurs

answer:

convection currents in the magma drive plate tectonics. heat generated from the radioactive decay of elements deep in the interior of the earth creates magma (molten rock) in the aesthenosphere. the aesthenosphere (70 ~ 250 km) is part of the mantle, the middle sphere of the earth that extends to 2900 km.