You have to provide some more information, as different enzymes are best suited to different pHs as they operate in different parts of the body.
The gene pool.
all of the alleles in a population are it's gene pool
Water that falls as precipitation<span> flows along the surface of the ground. This surface water infiltrates into the ground surface and is held in </span>soil pore spaces<span> and in the fractures of rock formations. Gaining access to groundwater sources therefore requires digging or drilling through the ground and into an aquifer.</span>
