Answer:
respiratory system
Explanation:
The bronchi become smaller the closer they get to the lung tissue and are then considered bronchioles. These passageways then evolve into tiny air sacs called alveoli, which is the site of oxygen and carbon dioxide exchange in the respiratory system.
Animals need to consume food in order to obtain energy (just like humans.
Answer:
Ovary in a plant help because they have ovules that develop into seeds upon fertilization
Explanation:
Hope this helps
Answer:
It controls the movement of dissolved substances in and out of the cell.
Explanation:
It is said to be semi-permable
