What characteristics distinguish different regional ecosystems? a. the major types of landformsb. the native plants and animals that live therec. the long-term plants and animals that live there d. the primary language and religious groups

The correct answer is - B. The native plants and animals that live there.

When there's a group of plants and animals that is interconnected and are dependent  on each other in order to survive, than we have a separate and unique ecosystem. Even a slight disturbance in the ecosystem can have devastating effects on the whole of it because everything in it is connected.

you probably know the answer. stop asking stupid questions and making me waste my time. j.k. ; )   b.t.w. what are three ratios equivalent to 5 : 11? thx

answer; obey the closest relative's wishes;