Oil Coal and Natural Gas are the fossil fuels the USA has the most reserves of. Given that only one of them is on the answers Coal is the correct answer.
The correct answer should be soil erosion if I’m not mistaken
Because sugar in fruits is good for you but artificial sugar isn’t healthy for you
Answer: Andrew's scientific theory was that technology would someday be the world's main resource.
Hopefully this helped.
What you meant must be the adaptive advantage of the frogs' lungs. Frogs are considered as amphibians wherein the have this unique ability to reside either on land or in water. Their specialised lungs could be responsible to these which makes them capable of breathing oxygen in water and land.