Answer:
they contribute in economy because
1. It is one of the factors for Hydro-electric power which is a friendly source of electricity
2.It can be used as touristic attractions by which the country gets foreign currency
3.Source of food,many animals live in the rivers which is the source of food
4. Can be used to conduct economic activities like fishing
Explanation:
hope it helped you :]
Wolves are a predator, meaning they keep the cattle population down. Take away wolves and you end up with more cattle. More cattle eats more grass, too much grass. The grass is eaten faster than it can grow back. Cattle are being born more quickly than being eaten by wolves. The region would ultimately become uninhabitable and nothing could live there.
Answer:
The answer is A
Explanation:
Seafloor spreading causes continental plates such as the North American Plate and the Eurasian plate to move apart in the mid-Atlantic ridge. However, the movement of the plate can cause the plates to move towards others. Eventually, when the continental plates move together they form supercontinents. The convection currents in the mantle are the driving force under the tectonic plates.
It is mostly concentrated at the northern part of China such as Dongbei and Huabei.