Nitrogen-fixing bacteria change nitrogen into a form of soluble nitrates that plants can use ...the air is 80% nitrogen but it is in N2 form which plants cannot use
The answer is none of the above
Answer:
Intestinal blood flow is critical for digestion, as well as a key element of overall well-being. The O2 consumption of the small intestine is more controlled than is the large.
Explanation:
In a food web there is a hierarchy, if any one of the parts of a food web is changed it can effect the parts above that may consume it, or the parts below that it may consume. Since the food web relies on balance and a hierarchy, if something changes it could disrupt the balance and flow of energy in the food web.
It is in standard notation
in scientific notation it would be is 5.4 x 10^6