2019 years have humans been on earth
Fossils fuels are bad for the environment because it emits air pollutants that are bad. When fossil fuels are burned it causes something called Sulfur dioxide, which causes acid rain.
The answer is; C
A wetland in an area in the environment that is regularly or constantly inundated with water either from precipitation or due to proximity to riverbeds. Other than watersheds, other wetlands include marshlands, mangroves, lakes, rivers, and etc.
Because it helps us understand our past, which in turn allows us to understand our present.
