What factors can affect an enzymatic reaction? (Choose all that apply) heat
a change in pH
a lack of substrate
A lack of products
misfolding of the protein

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 drives an advertising campaign?

Which characteristics are typical of a human population in the postindustrial stage?