It would be A. Commensalism because only the plant is being benefitted in this relationship, whilst there is no harm nor benefits done to the fungus.
A subspecies is a taxonomy category that ranks below species, usually permanent geographical isolated race. <span />
Because there are other liquids in your body it passes through and it adds to the amount of water.
The population will later, cease to exist.
Since the population is experiencing (about) the same rates of immigration and emigration, these 2 factors will not change anything.
A low birth rate and a high death rate means that more people are dying than being born.
Therefore the population will decrease until there is nobody and it will cease to exist.
