Describe some ways in which people use energy to cause a change in their environment to better meet their needs.

1) what three conditions must be present for minerals to form through natural processes? 2) why are minerals considered inorganic substances? 3) how do oxides differ from other minerals that contain oxygen atoms? 4) how is a sulfide different from a sulfate? what makes native elements unique?

9. the history of life on earth is recorded in

What is the membrane that sheath of schwann cell containing cytoplasm and nucleus that encloses myelin