what is the formula for area of a parallelogram. use x for multiplication and / for division is necessary?

The concept of keystone species is controversial among ecologists because most organisms are highly interdependent. if each of the trophic levels is dependant on all others how can we say one is most important

Based on her survey, which advertising mediums will work best to publicize leslie's in-store specials?

Which level of taxonomy has the fewest organisms?