C. Mining asteroids has not really been a concern unlike the other 3.
The have amplitude will grow, it will be bigger
d. They can be concentrated in an organism’s fat tissues.
This is referred to as biomagnification -- the POPs become more concentrated as they move from one animal to another. This is a main concern because even trace amounts, in animals at the bottom of the food chain, can cause toxicity to animals at the top of the food chain.
The theory that proposes that the universe emerged form an explosion (The Big Bang) is known as the Big Bang Theory.
Hope it helped,
BioTeacher101
