The correct option is 3.
Enzymes are biological catalysts which speed up the rate of biochemical reactions inside the cells. Enzymes are very specific in action and they require specific conditions called optimum conditions for them to function optimally.
When the optimum conditions are not met, an enzyme's activity will be lowered or totally stopped.
Conditions that affect the optimum activity of an enzyme include: temperature, pH level and regulatory activity of regulatory enzymes and hormones.
Answer:
C. top soil has more organic matter.
Explanation:
It's more fertile than subsoil, due to having more organic matter and because fertilizers are usually added to the topsoil only.
The answer is the first one because it doesn't create gases and, the third one doesn't even make any sense so its definitely not that one
Answer:
yes, like poles can attract each other
Explanation:
this is when a magnet is one side north and the other south. They dont attract and repel when it it (north,north) and (south, south)
