Answer:
taking data from a population rather than a specific group of people to gather information from
(random and most representative on a large scale of people)
The us has way more things to help fight such as medicines
B. Deforestation - Deforestation can take as little as an hour, depending on the size of the forest.
I believe the correct answer to that is Thailand.
A population pyramid is definitely a way you can see the sizes of different age groups in a population.