Pretty sure its C. Because if you look it up it says that it <span>illustrate the complex relationships among economic, social, and environmental issues </span>
The correct answers are:
2. Fresh water is essential to all life on earth.
and
4. Most of earth's water is stored in the oceans
The moving of continents is called continental drift. The average speed of the movement of these continents are 2.5 inches per year. Examples would be t<span>he North American and Eurasian tectonic plates which are separated by the </span>Mid-Atlantic Ridge<span>. The two continents are moving away from each other at the rate of about 2.5 centimeters (1 inch) per year. </span>
