There aren't enough oxygen molecules in the air are higher altitudes
Enzymes. There are 3 main types: Peptidase, Lipase, and amylase :) hope that helps! I'm learning that stuff too :)
Yeast has many comercial uses in the production of breads, fuel, sodas, and wine.
<em>global warming is caused by different gases ,, hence they are affecting the environment by increasing temperature ,, only science can solve such a big problem because during global warming all the reactions that take place are scientific..</em>
The correct answer would be (C. it spins to make the generator work.
