<span>a and c could be true
Animals don't have peace treaties with each other and the other two options would both allow a population to increase in size.</span>
He could race multiple cars with different weight added on them and do multiple races (just to be sure) and see if his theory was correct, if not he should right down what he has learned from his experience! :D
-You'll never learn if u don't try ;)
Answer: Ionic bond
Explanation: Ionic bond is a type of chemical bond which occurs by removing one or more electron from one atom and it is attached to another atom which gives a negative and positive ions that attract each other. For example Sodium chloride Nacl2.
The people who are recommended are people who want to take it. Theses exist to confuse people.