A rich variety of genetic material in an ecosystem will: 1. reduce the biodiversity of the ecosystem

2. decrease the carrying capacity of the ecosystem

3. reduce the likelihood of future medical discoveries

4. increase the chances that some organisms will survive change

the cost of mining is extremely low compared to the money earned from mining, creating income to improve the environment.

sorry, is there a picture? i do not see any arrows.

wut? unius0123 wut?

imagine a line passing through the center of earth that goes through both the north pole and the south pole. this imaginary line is called an axis. earth spins around its axis, just as a top spins around its spindle. this spinning movement is called earth's rotation. at the same time that the earth spins on its axis, it also orbits, or revolves around the sun. this movement is called revolution.