<span>both excitation and inhibition</span>
A - Salinity because salinity is how much salt is in water and adding more would increase the salinity.
The higher biodiversity in an ecosystem means that there is a greater variety of genes and species in that ecosystem. A great variety of genes and species means that the ecosystem is better able to carry out natural processes in the face of external stress. Thus, the ecosystem is more sustainable.
A gas. This is because none polar solvents contain binds between atoms with similar electronegativities, some examples are carbon and hydrogen