<em>The birth rate (technically, births/population rate) is the total number of live births per 1,000 in a population in a year or period. lower birth rate will reduce the rate at which a population grows. ... Consider a population that increases 5% every year.</em>
I looked it up and I got fungi which isnt one of your answer choises the best I can do is tell you its either A or B I think.
Geological change will not cause a mass extinction, because it happens on a too big scale - on the scale of millions of years. During such long time, it is more likely that other causes will influence the survival of extinction of species, such as climate change or environmental disasters, and even if there is a small influence, it would not be significant next to other causes.
