They are less threatened because they are more adapted to their environment therefore will survive drastic environmental change. This is because they are more diverse: they have evolved more.
If you change more than one variable at a time, then you will have a harder time trying to figure out why the certain change occurred.
D<span>. </span>Primary succession<span> / </span>secondary succession<span> e. Genetic drift / </span>primary succession<span>. </span>d<span>. ... A predictable series of </span>environmental<span> changes </span>occur<span> in an </span>ecosystem<span> after a ... An </span>area<span> of </span>bare rock<span> outcrop is colonized by small lichens and mosses for ... Weed seeds will </span>not<span> disperse over a large enough </span>area<span> to colonize a prairie. a.</span>
