Answer:
The bird's respiratory system consists of paired lungs, which contain static structures with surfaces for gas exchange, and connected air sacs, which expand and contract causing air to move through the static lungs
Explanation:
Answer:
multiple types of cells that are connected make up all living organisms
Explanation:
since biology explains the definition of cells, being the structural unit of all living organisms, it qualifies the statement that multiple types of cells connect to make up living organisms.
Answer:
third option should be correct
Explanation:
<span>1 phosphate group is added to ADP, and energy is required.
ATP is formed</span>
