Answer:
B
Explanation:
a membrane's purpose is to protect by controlling what enters or leaves the cell
Answer:
Catalyst
Explanation:
They increase the rate of reaction by decreasing the activation energy of the reaction. As they are not used up in the reaction they are required in a small quantity.
Answer:
Yes.
Explanation:
Yes, the statement is right because in chemical war, great damage occurs to all living organisms that has a bad effect on our environment. These chemicals are very dangerous so its usage in the war has long term effects on the environment and the organisms that live in it. Both the opponents receive great damage from this chemical war and the destruction of the natural beauty of the place vanished where this war occurs so this vanished of beauty and organisms is the defeat of both the opponents that fought this war.
true because when you have a disease your doctor will proscribe antibiotics for you hope it helps
