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In increase in the proportion of people living in towns and cities. This creates the oposite that minimal impact has

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Constant hot weather and minimal rainful, has tall trees and leaves

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Zoom Astronomy
The Water Cycle

The Water Cycle (also known as the hydrologic cycle) is the journey water takes as it circulates from the land to the sky and back again.

The Sun's heat provides energy to evaporate water from the Earth's surface (oceans, lakes, etc.). Plants also lose water to the air (this is called transpiration). The water vapor eventually condenses, forming tiny droplets in clouds. When the clouds meet cool air over land, precipitation (rain, sleet, or snow) is triggered, and water returns to the land (or sea). Some of the precipitation soaks into the ground. Some of the underground water is trapped between rock or clay layers; this is called groundwater. But most of the water flows downhill as runoff (above ground or underground), eventually returning to the seas as slightly salty water.

WHY ARE THE OCEANS SALTY?

Oceans cover about 70% of the Earth's surface. The oceans contain roughly 97% of the Earth's water supply.

As water flows through rivers, it picks up small amounts of mineral salts from the rocks and soil of the river beds. This very-slightly salty water flows into the oceans and seas. The water in the oceans only leaves by evaporating (and the freezing of polar ice), but the salt remains dissolved in the ocean - it does not evaporate. So the remaining water gets saltier and saltier as time passes.

Web Links On the Water Cycle and the Oceans

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Advertisement. EnchantedLearning.com is a user-supported site. As a bonus, site members have access to a banner-ad-free version of the site, with print-friendly pages. Click here to learn more. (Already a member? Click here.) Zoom Astronomy The Water Cycle The Water Cycle (also known as the hydrologic cycle) is the journey water takes as it circulates from the land to the sky and back again.

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A community of species and there enviroment

Like pokemon

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FOOD CHAINS
Group of organisms interrelated by the fact that each member of group feeds on the one below it.

FOOD WEB
Consists of many food chains, shows the many different paths plants and animals are connected.

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Climate
Geology
Position and aspect

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Living organism

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A non-living organism