Answer: Metric System
Explanation: The metric system is a more logical way of explaining measurements because it uses base ten to go up or down in the scale of measurement. This makes it more efficient and reasonable, on top of being easier to learn.
Answer:
B. Hypothalamus
Explanation:
Hypothalamus controls all the aforementioned functions. A tumor caused a reduces functionality
Natural selection
Bc it is
Can't see the structures so we can't answer your question