the answer is b: blinking when light is flashed in the eyes
I think its C. global warming
because the other one directly threats aquatic bio diversity while global warming doesn't just affect aquatic biodiversity
Answer:
Structural. The largest class of proteins are structural proteins. ...
Storage. Storage proteins house critical elements that your cells need. ...
Hormonal. Hormonal proteins act as chemical messengers. ...
Enzyme. Enzymes serve as biological catalysts needed for chemical reactions. ...
Immunoglobulins.
Explanation:
The two membranes pull apart a little and create a small pocket or sack of air. As the developing bird grows, it breathes in oxygen from the air sack and exhales carbon dioxide. Several thousand microscopic pores all over the surface of the egg allow the CO2 to escape and fresh air to get in.
Please mark brainliest :)
