True or False 1. The substrate is changed in the reaction 2. When all substrates are used, the reaction stops.

The model illustrates a process by which a substance is taken up by a cell

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

3what is the range of the function shownin the graph? ucation solutionsnw novo-9-8-7 -6 -5 -4 -3 -2 -1123456789