Birds such as eagles have feathers and reptiles such as a lizard has dry scaly skin. Birds are warm blooded, and reptiles are cold blooded.
The best answer would be "research reasons why species change over long periods of time"
if not i apologize but this is my best guess<span />
Answer: Option B
Explanation: The thin layer that forms the outer covering of the cell is known as the cell membrane. It is composed of the lipid bilayer which as embedded proteins.
This membrane is selectively permeable which means it allows only specific molecules to pass through them.
The main function of cell membrane is to protect the cell from the outer environment and by the invasion of harmful bacteria and viruses.
