Explanation:
For any enthalpy change in a chemical reaction, (exothermic/endothermic), the activation energy must be reached so as to break the strong chemical bonds between the reactant molecules.
I think verterbrates have a back bone others do not. I only THINK so.
Answer:
The answer you are looking for is B. The gravitational pull of the moon
Explanation:
The moon influences tides the most. The moon's gravitational pull on the earth is strong enough to tug the oceans into bulge
Answer: They do this to obtain the vital nitrogen that they need to grow.
Explanation: