What takes place when you inhale and exhale

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.

What was the land like over 500 million years ago? what was under the sea?

1. describe the structure and function of the specialized cells you observed in the video. 2. research the types of cells present in the kidney.