The talk test is a simple way to measure relative intensity. In general, if you're doing moderate-intensity activity you can talk, but not sing, during the activity. If you're doing vigorous-intensity activity, you will not be able to say more than a few words without pausing for a breath.
I believe one method is by trying it's hand at "oil farming". Using UN-imported oil for energy use is cheaper. Another is by using Solar energy that can be collected as long as there is sunlight. :)
I think the answer is A although I am not entirely positive
I believe it is C
B makes no sense to me because neither is going to be eliminated to my knowledge
A is wrong because they both sever you no mater age
Because they can be addictive. which leads to problems
