Why do rivers and lakes support different life zones?
What will be an ideal response?
The movement of water in rivers create different habitats and life zones in rivers than those found in lakes. The downstream flow oxygenate river water and distribute nutrients from land.
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Benefits of floods include all of the following except
a. provision of productive farmland b. refilling of wetlands c. recharging of groundwater d. filling up of soil air spaces to prevent oxidation of nutrients e. supporting biodiversity
As two objects lose mass, the attractive force toward each
A. decreases. B. increases. C. is not affected. D. becomes uncertain
One benefit of offshore wind farms is that ________
A) maintenance costs are less than they are on land B) wind speeds are higher and turbulence is lower over water than over land C) unlike land-based wind farms, they do not interfere with bird migration routes D) development of land for human use is pushing wind farms to open water E) they are more aesthetically pleasing than wind farms on land
It is estimated that ___% of all species that have ever lived on this planet have gone extinct
Fill in the blank(s) with the appropriate word(s).