Well in order for chemical digestion to occur period, a enzyme is needed.
In the mouth this enzyme is amylase
Answer:
The organ system
Explanation:
An organ is composed of tissue and performs a specific set of functions for the body. And that’s called the organ system
Answer:
D
Explanation:
Its d I think tell me if it's wrong If it is I'm sorry
Q6: A
Q7:D
Q8:C
Reasoning
Q6: Based on all the other questions talking about common ancestors I deduced that to find a “common” ancestor they need to find things that are the same.
Q7: All arthropod have a exo skeleton for example a lobster or crab. They all have a head, abdomen and thorax for example ants. They all have legs with joints for example a spider.
Q7:So bones are traveled down by ancestors so the types of bones stay the same but natural selection has changed them to better fit their environment.
