Does the earth system essentially contains a fixed amount of chemical elements that cycle continuously throughout the system.

The current is like a stream or river in the ocean true or false

Plz answer ! find the alps. what countries and country borders intersect this major mountain range? which borders seem to be defined by the edges of the mountains? which borders seem to be defined by the edges of the mountains? which borders cut across the mountains?

In a river, which of the following would most likely be carried by suspension? this is called