Answer:
A) The role of bacteria fixing nitrogen is very important because it fixes atmospheric nitrogen in the roots of plants. For example, Azotobacter is a bacteria which lives in the root of the higher plants. The bacteria fixes nitrogen for the plant and the plant gives habitat and food to the bacteria and hence, both get benefit.
B) Nitrifying bacteria are the bacteria which converts ammonia into nitrates. Examples are Nitrosomonas and Nitrobacter.
C) Denitrifying bacteria is a type of bacteria which converts nitrates into atmospheric nitrogen. Examples are Serratia and Pseudomonas.
Answer:
C. Bones provide structure and support to the body, while bones move the muscles.
Explanation:
The muscular nor skeletal system send signals to the body. This job belongs to the nervous system.
Muscles cannot offer the same amount of support and structure to the body that the skeletal system can. However, muscles can contract and relax to move.
~Hope this Helps!~
1.5billion I don't know don't be so harsh?
