Plz help!

What are the main properties of stars?

I think the 2 main properties is gas and heat. That is what stars need.

-Dhruva;)

surface mining destroys mountain tops, landscapes, forests and wildlife habitats. on top of that, it leads to soil erosion and destruction of agricultural land. the landscape changes can also disrupt river channels and streams, which leads to flooding. which, can destroy plant life and other animals as well.

explanation:

answer; polycythemia is the correct answer;