Which explains how genetic variation occurs by way of sexual reproduction? 1)The union of sperm and egg occurs during meiosis.
2)Half of each chromosome pair comes from each parent
3)Sexual Reproduction does not produce variation
4)Meiosis occurs in all body cells also.

Climate change also increases the appearance of more violent weather phenomena, drought, fires, the death of animal and plant species, flooding from rivers and lakes, the creation of climate refugees and destruction of the food chain and economic resources, especially in developing countries.

Explanation: Hope this helps