Answer:
the cell wall
Explanation:
cell membrane is not rough and it doesn't support or protect the cell.
cytoplasm is the inner environment of the cell that includes organelles and nutritions. it's not rough and doesn't support or protect the cell.
Yes, the pterosaurs is the ancestor of the bird.
Answer: Im pretty sure it´s D.
Explanation: Manatees like to raise and feed their young in safe places so if we increase the amount of protected areas their population is more likely to increase.
Hope this helps!
No because they wouldnt be able to move on land to find food and i think they cant breath either
I believe that a pair of homologous structures in this case is; Maple leaf and oak leaf. Homologous structures that have similar ancestries and common traits, however they may not have the same function in an organism. They appear in different animals or organisms, underlining anatomical commonalities demonstrating a descent from a common ancestor. Examples include the arm of a human, the wing of a bird or a bat, the leg of a dog and the flipper of a dolphin or whale.
