Podcast Beta
Questions and Answers
Deserts are very dry ecosystems. Desert plants and animals can survive with very little ______.
water
Desert plants, such as cactus, have thick stems that store ______.
water
The roots of a cactus lie just below the soil and spread far from the ______.
plant
The kangaroo rat is ______. It comes out to search for food at night when it is cooler.
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They also conserve water by producing very little urine and not ______.
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A good river ecosystem should have good tree cover, good rock and/or plant cover, and a good flow of __________.
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No grazing of vegetation should be allowed within 10m of the river banking to preserve the ecosystem's integrity and protect the river from damage caused by ________.
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A healthy river ecosystem should have unrestricted flow, allowing it to spate (flood) during heavy rain to help wash out debris and ________.
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To support a diverse invertebrate community for food, a good river ecosystem should provide a mix of water flow types such as run, riffle, and ________.
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The substrate size in a healthy river ecosystem should be intermediate to allow trout to release their ________.
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