If an atom loses or gains an electron, it is called
a. ion
b. isotope
c. molecule

Buuy which of the following did you include in your response? organs perform specific functions in the body to keep it alive. organelles perform specific functions in cells to keep them alive. done

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

What is the problem in this article? what solution does the article propose?