Why does some land have so much growing on it,while other land has almost no plants growing on it at all?To grow, plants need several things. One is warmth. In very cold places almost nothing grows. Plantsalso need water. In very dry parts of the earth only a few unusual plants can...
Whydoessomelandhavesomuchgrowingonit,w hileotherlandhasalmostnoplantsgrowingonitat all?Togrow,plantsneedseveralthings.Oneiswarmth.Inverycoldplacesalmostnothinggrows.Plantsals oneedwater.InverydrypartsoftheEarthonlyafew unusualplantscangrow. That'swhydrydesertseve rywherearealmostnotcoveredbytreesorgrass....
The dusty red planet has fascinated us for centuries. Even as we learn more, its mysteries keep us in suspense.
When it comes to mapping the Earth’s surface, the notion of documenting oceans presents an entirely different set of challenges. Sure, Google has provided us with incredibly detailed imagery of bustling cities, remote deserts, and everything in between, but the oceans? That’s a whole differen...
Why might some regions in deserts serve as runoff sinks (i.e., have more water flowing in than out)? Why might a lake with a large surface area mix more often and more deeply than a smaller lake? Why does hot water sometimes feel cold on human skin? What is the biggest problem face...
Plants also need water . In very dry parts of the earth , only a few unusual plants can grow . That ' s why dry deserts (沙漠)are not covered by trees or grass . Plants must also have some room for their roots to grow . It ' s difficult for them to grow on hard land . The...
Why does some land have so many plants growing on it, while other land has almost no plants growing on at all?To grow, plants need some things. One is warmth. In very cold places, almost nothing grows. Plants also need water. In very dry parts of the Earth, only a few unusual ...
Why do polar bears live in the Arctic region? Why doesn't the Antarctic Ocean have hurricanes? Why do most deserts have interior drainage patterns? Why is the Great Sandy Desert so dry? Why does Antarctica have such high biological productivity? Why does Antarctica have 24 hours of daylight?
To grow, plants need several things. One is warmth. In very cold places almost nothing grows. Plants also need water. In very dry parts of the earth only a few unusual plants can grow. That’s why dry deserts everywhere are almost not covered by trees or grass. ...
Why do most deserts have interior drainage patterns? How does the speed of crop rotation affect IPM strategies? Why is the Gulf Stream slowing down? Why does the space shuttle fly upside down? Why don't jet aircrafts fly in the troposphere?