Answer:
D. Microscopic organisms break down the apple and release its material into the soil and air.
Explanation:
Without microscopic organisms today, everything that has died or fallen will still remain on the ground. Fungi, bacteria, and etc. play an essential role in the Earth's ecosystem by breaking down organic material.
Answer:
D. The profit motive drives companies that are competing in the global marketplace to exploit natural resources.
Some of the evidence comes from fossils, and some comes from studies that show how similar living things are to one another. By the 1930s, scientists had also learned about genes. As a result, they could finally explain how characteristics of organisms could pass from one generation to the next and change over time
Answer:
See below
Explanation:
There are several reasons that genetic variation occurs. Some of them are as follows: mutation, random fertilization, recombination event during meiosis etc. The way in which this variation in genetics is distributed is in a continuous way. In case of the human species, it is reported that 85% of all variation is within a certain population, while the remaining 15% of genetic variation is between populations.
