with earth's core being very very hot it is plasma which is lava but it comes closer to the surface and cools down to become a solid.
D. Regulate the amount of water that can be pumped
Answer: A
Explanation: It makes the most sense because it isn't directly speaking about something, it is mainly summarizing the main idea. I'm not 100%, but that's the one I would choose if it were me. Hope I helped out a little!
Answer:
microscopic and near-microscopic pseudocoelomate animals.
Explanation:
Variations in a genotype could be major or minor. It really depends on the degree of change. A genotype changes due to errors mutations. Some are endogenous, occuring with the organismm often during meiosis that causes changes in a genotype.
Learn more about here: https://www.quora.com/What-causes-variation-in-genotypes-How-does-this-occur
