Answer:
An organ system is a group of organs that work together to perform a complex function. There are eleven organ systems in the human body. All of these are required for survival, either of the person or of the species.
Explanation:
Answer:
The reason why it occurs is when the organism doesn't have the desirable traits it needs to survive.
Explanation:
Answer:
b
Explanation:
These cells are different because they use the same set of genes differently.
Answer: C. The nucleus in an animal cell has a different primary function than in a plant cell.
Explanation:
In both plant and animal cells, the nucleus safely stores the DNA so it doesn't get damaged.