Answer:
They speed up chemical reactions. Without them you wouldn't be alive. They break down macromolecules, and also lower the amount of energy needed for a chemical reaction to happen.
The heat from hotter object goes to the cooler object. when they reach the same temperature the heat flow will stop.
It is the motor cortex of the brain that controls the voluntary movements of the body. It is in the rear part of the frontal lobe and is a region in the cerebral cortex. It is responsible for planning, control and the execution of the voluntary movements in the body.
It will increase because of decreased photosynthesis. Photosynthesis uses carbon dioxide to function. So, the carbon dioxide levels would go up as the oxygen levels go down.
I hope this helps!
~cupcake
You don't have the options to choose from but I believe from past experience the answer to the question is element.
