Salivary glands are not part of the alimentary canal.
Answer:
True
Explanation:
Because of Pangea, they show evidence of fossils deep underground in different continents
<span>Positive feedback</span><span>
There are two types of feedback mechanisms
Positive feedback heightens the intensity
Negative feedback lowers the intensity
These all serve to maintain homeostasis. Homeostasis is the state where the internal and external part of the body maintains and establishes balance and equilibrium. </span>
Answer:
both options 4 and 3 is the answer..
