Nitrogen, even though makes for about 78% of our atmosphere, and is by far the most abundant gas in it, we can not use it because it can not be taken out of the atmosphere as it is. If we take nitrogen in the form as it is in the atmosphere it is useless for both humans and plants. It has to go through a process of ''fixation'' first before we can actually use it in our food.
Answer:
C
Explanation:
I believe he was very good at mathematics
C) Allow the heavily degraded ecosystems to disappear
Digestion is of two types, mechanical and chemical. Food first enters the mouth where it is mechanically digested by the teeth and chemically digested by the enzymes in the saliva. Next, food travels to the pharynx and then the esophagus via peristaltic motion of the muscles. Then the food enters the stomach, where chemical digestion is completed. The broken down food is sent to the small intestine for absorption and then the large intestine to have water removed and then be expelled from the body.
Answer:
D
Explanation:
typically others accept things as true with the more scientific studies leading to the same conclusions
