2. Darwin also named some factors that affect the process of natural selection. Among these were overproduction, competition, and variations. Overproduction happens when species reproduce many more offspring than can possibly survive. ... Those who are better able to survive then pass on their genes to their offspring.
3. Evolutionary change can occur through mutation and natural selection. Mutations are genetic changes in an organism. ... Even though outside factors can cause mutation to occur, what kind of genetic change will occur is random. Mutations can be harmful, beneficial, or neutral.
It is important because it breaks down the food eaten by the animals into nutrients which are needed for their bodies to function well. Not only it is important to animals but also to humans. <span>Food and drink must be changed into smaller molecules of nutrients before the blood absorbs them and carries them to cells throughout the body.</span>
A fault.
Faults are gaps or cracks between two bodies of rock.
For example I would do the stem.
The stem consists of xylem and phloem. The xylem is for transporting water and mineral ions which is absorbed by the root to the leaves. Meanwhile, the phloem is for transporting sucrose and amino acids from the leaves, to the storage place such as roots or stem.