The pond is considered as a the crayfish's
A) habitat
This is because the pond is where the crayfish lives and where it gets its food. It does not stray far from it and go back to it just to get food. It stays in the same location.<span />
Respiration
Hope this helps :)
5. gravity
6. I didn't know what that question was asking.
7. symmetry
8. hemisphere
Deoxygenated blood into the right atrium
Answer and Explanation:
Due to technical problems, you will find the complete answer and explanation in the attached files