I believe that the areas are tropical and polar zones.
Endocytosis carry substances into the cells, and exocytosis is what the cell rejects.
Answer:
This is called Night blindness.
Explanation:
It is also known as nyctalopia and is a vision impairment. this happens when the rods in the eyes do not transform light into the nerve impulses efficiently and easily than normal. As a result you will be having hard time seeing in dark places where there is only minimal light.
This is can be caused by cataracts, nearsightedness, usher syndrome or deficiency of vitamin A. These can be cured by certain procedures. To prevent developing this eye problem, it is important to take care of your eyes. you should monitor sugar levels and eat the right foods. foods that are abundant in vitamin A and other antioxidants would in preventing it.
The alveoli are lined with mucus and are surrounded by a network of blood capillaries. They have very thin walls for gases to be absorbed through.Carbon dioxide diffuses from the blood into the alveoli.
