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16 Cards in this Set
- Front
- Back
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What is the bottom trophic level of a food pyramid called? |
The producer level |
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External pressure on a fish is 5,280 pounds per square foot. What is the internal pressure of the fish? |
5,280 pounds per square foot |
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Which water sample below would be considered fresh water? |
1000 ppm |
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Which of the following statements is true about intertidal zone? |
It is a food/nutrient-rich place |
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A ten meter rise in sea level would flood about 25 percent of the U.S. population. |
true |
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If the ice caps of the earth were to completely melt, the rise in sea level is estimated to be about five meters. |
false |
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Which trophic level would zooplankton occupy? |
the first consumer level |
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Why is desalination of seawater done in only a few regions of the earth and even then in only limited ways? |
It is very expensive compared to using rivers, lakes, or ground water. |
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Why was the sea level lower during the last ice age? |
Water was locked up as ice on the land so the sea level was reduced. |
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What are some ways organisms cope with danger? |
They burrow in the sand, they have hard shells, they secrete coatings of mucus |
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Waves move energy across the sea |
true |
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Which of the following has the greatest influence on the tides? |
the gravitational pull of the moon |
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Which of the following is true of the amount of water in the ocean reservoir? |
There was less water in the ocean reservoir then there is today |
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Which factor below does not affect the creation ocean currents? |
the magnetic polarity of earth |
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Which statement concerning the volume of water in the oceans over geologic time is false? |
The volume of water in oceans has not changed significantly since the earth was formed |
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How do ice ages and the warm periods between the influence the water cycle? |
They raise sea level, They lower sea level, they increase water storage in the ice cap reservoirs on land |
