<span>B. Marsupials. </span>Amniotic eggs is a unique kind of egg because they possess a semipermeable shell to protect the egg but it also allows gas exchange. Inside an amniotic egg contains the amnion, chorion and allantois. Animals that lay amniotic eggs are called amniotes, which include reptiles, birds, dinosaurs, monotremes (platypus).
<span>alpha subunits bind to K+ channels, close them, leading to depolarization.</span>
Answer:
<em>Carbon dioxide (CO2) is the primary greenhouse gas emitted through human activities. </em>
Answer:
nutrients
Explanation:
something you get from eating food.