answer:
the relationship between climate-change and regularity of drought is global warming. climate-change can increase the chances of drought in a region; regions can gradually become drier overtime essentially due to the increasing concentration of temperatures and gases in the atmosphere. warmer temperatures enhance evaporation, which dries out soils and vegetation. this makes periods with low precipitation at high-regularity for drought.
(paraphrase if u can.)
Desalination can be used to provide fresh water. This produced water can be used for drinking as well as irrigational purpose. The byproduct of desalination is the creation of salt. The correct option among all the options that are given in the question is the first option or option "a".
They mostly go settle near water, the ocean is one of their best sources to survive with.
