Which process can be described as two cell divisions, genetic variation, and haploid cells? a. meiosis b. mitosis c. binary fission d. fertilization

this process is known as meiosis

Answer : The correct answer is -

A. meiosis.

Meiosis is a type of cell division that occurs during the process of formation of gametes particularly in sexually reproducing organisms (such as human beings).

In this process of cell division, a diploid parent cell divides (through two rounds, meiosis I and meiosis II) and produces four haploid, reproductive cells (also called gametes such as egg and sperm).

Genetic variation is produced due to recombination between homologous chromosomes (particularly in prophase I of meiosis I).

Thus, option A is the right answer.

answer and explanation;

volcanic rocks are igneous rocks which form from lava, molten rock which has been thrust out of a volcano onto the surface of a rocky body such as an asteroid, planet, or dwarf planet.  

plutonic rocks are igneous rocks which form from subterranean chambers of molten rock or magma. plutonic rocks make up the base of continental crust as well as oceanic crust. their slow rate of formation causes them to be coarse grained since there is plenty of time for large crystals to form before the magma solidifies into rock.

the textural difference is that plutonic rocks are more coarse grained than volcanic rocks. plutonic rocks are coarse grained while volcanic are fine grained ; glassey or fragmental. since fine and coarse are adjectives the decision as to whether a rock is fine or coarse grained is generally made on the bases of whether or not the individual crystals can be seen in most if the rock.