C. At a pH of 8, the enzyme starts to denature and changes shape.
Answer: In the atmosphere, nitrogen exists as a gas (N2), but in the soils it exists as nitrogen oxide, NO, and nitrogen dioxide, NO2, and when used as a fertilizer, can be found in other forms, such as ammonia, NH3, which can be processed even further into a different fertilizer, ammonium nitrate, or NH4NO3.
Explanation:
One of the best examples would be Archaea
Most appropriate answer is D !As vessels dialates the velocity of the blood flow decreases !
So both C and D is appropriate! But I will suggest D !
A plant leans toward a light source.
