Answer:
The troposphere
Explanation:
It begins at the surface of the earth and extends out.
Answer:
Keeping lakes and rivers free of pollution.
Explanation:
Answer:The Antarctic Treaty
Explanation:
Answer:
Abiotic resources are usually obtained from the lithosphere, atmosphere, and hydrosphere. Examples of abiotic factors are water, air, soil, sunlight, and minerals. Biotic factors are living or once-living organisms in the ecosystem. These are obtained from the biosphere and are capable of reproduction.
A line segment on a graph would be any line that isn't continuous. It would have dots on the ends instead of arrows. Is that what you're asking?