Answer:
Nitrate
Nitrate is the form of nitrogen most used by plants for growth and development. Nitrate is the form that can most easily be lost to groundwater. Ammonium taken in by plants is used directly in proteins. This form is not lost as easily from the soil.
Explanation:
I am more of a chemistry person, but my best answer is the double-helix structure. The DNA rotate around a central point allowing it to keep a constant distance
Answer:
B. The hamstrings must relax.
Explanation:
When the quadriceps contact, the hamstrings must relax at the same time.
Answer:
False
Explanation:
the amount of neutrons in an atom can vary, which is why we have different types like uranium 242 and 243 etc. regarding how many neutrons it has, some hydrogen have no neutrons as well.