Answer:
It just seems like you're supposed to give four pieces of evidence of natural selection. If you're still confused, you can always ask your teacher.
Explanation:
Answer:
D) Apes and chimpanzees are thought to have evolved from a common ancestor.
Pepsinogen, a digestive enzyme ,is secreted by the chief cells in the gastric mucosa.
Answer:
No
Explanation:
It is because of the air it will crush it.
