What is global warming? Question 4 options: The increase in Earth's average temperature over a long period of time. When the ocean's temperature rises. The period of time when the Earth is closest to the sun. When the Earth's surface and ocean's temperatures are the same.

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what do the different brain waves do?

explanation:

brainwaves are produced by synchronised electrical pulses from masses of neurons communicating with each other. brainwaves are detected using sensors placed on the scalp. brainwave speed is measured in hertz (cycles per second) and they are divided into bands delineating slow, moderate, and fast waves.

i believe the answer is snake.