Asubstance is not required to to be considered a mineral. a. be naturally occurring b. be solid c. have atoms arranged in an orderly pattern d. contain carbon.

Scientist believe that earths core is around 6000°c where does this heat come from

Which of the following energy sources is not an example of renewable energy? a. a wind turbine farm b. a clean-burning, coal-fired electric plant c. a hydroelectric dam d. a solar panel mounted on a home

Name one type of data that h-r diagrams do not show.