Which of the following statements regarding water conservation is not true? a. only about 1% of earth’s water supply is usable for human consumption. b. over half of the states predict water shortages by 2013. c. while environmentally beneficial, water conservation is a costly endeavor. d. failure to conserve water will lead to more water contamination.

The correct answer is C. While environmentally beneficial water conservation is costly endeavour.

We can say that it is only one percent of earth's water supply which is usable for human consumption.

If we do not conserve water it will lead to a lot of water contamination. Water conservation can include activities, strategies and policies which are termed as sustainable to manage.

If we conserve water, there is availability of water which can be used in the future. If we conserve water, we also conserve energy and also habitat conservation.

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explanation:

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what do the different brain waves do?

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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.