What two forces do scientists believe are responsible for tectonic plate movements

The energy of blowing wind can be harnessed to create electricity. why is wind considered a renewable energy source? a) wind does not cause destruction of the environment.b) wind turns the blades of a windmill that creates electricity.c) wind provides only a very small amount of electricity to the united states.d) wind comes from atmospheric conditions that are available indefinitely.

Nucleic acid certain protein cell membranes certain carbohydrates

What are some natural processes that represent physical and chemical changes?