Methane and oxygen react to form carbon dioxide and water. the reaction speed can be increased by: A. decreasing the concentration of water.
B.
decreasing the concentration of methane.
C.
increasing the concentration of carbon dioxide.
D.
increasing the concentration of oxygen.

Animal bodies (and even plant bodies for that matter) are complex enough that life couldn't exist without enzymes. enzymes are usually large, complex biological catalysts that are expensive to make. enzymes speed up the rate of chemical reactions without being used up during the reaction (they can be reused many times). they are highly specific in the reactions they regulate. knowing what enzymes are and how they function, why does this explain why complex life forms could not exist if there were no enzymes.

How does friction with the atmosphere affect the speed of an artificial satellite

Graphs you see question 5 options: the change in data over time the relationship between different dependent variables the relationship between the independent variable and the dependent variable/s the relationship between different independent variables