What makes the sahara a desert

Cities in South America are built in the

What is an important idea that geologists use to put sedimentary rocks in order from older to younger?

What effect does living near a large ocean or lake have on average air temperatures?

A wetland, or marshes, is a distinct ecosystem that is inundated by water, either permanently or seasonally, where oxygen-free processes prevail. Many habitats that are rich in plant life are important stores of carbon.

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What landforms are created at convergent boundaries?

In which direction does the Sun appear to move across the sky? Ofrom west to east from east to west from north to south from south to north

What is a planetary nebula neither a planet nor a nebula?

Which of the systems below is not true about atmospheric circulation patterns

What will happen when the stars go out