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Question
Red tides are caused by ________.A) increased ocean oxygen content
B) increased ocean carbon dioxide content
C) nutrient upwelling
D) the position of the Moon
E) nutrient pollution leading to marine algal blooms
Answer
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B) Ruben needs to take measurements of the puppy's weight and height at least once a week for it to be a good experiment.
C) Ruben needs to control for the amount of exercise, water, and care that the puppy gets each week, so that they are equal from week to week.
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B) theory about umbrellas
C) theory about car accidents
D) scientific study
E) observation
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Differentiate between renewable and nonrenewable natural resources. Give examples of each.
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Many permafrost soils in the Arctic are peat soils.
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Shelterbelts are to ________ as terraces are to ________.
A) wind erosion; water erosion
B) water erosion; wind erosion
C) leaching; desertification
D) stratification; salinization
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E) There is no Canadian agency charged with soil degradation, only volunteer firms funded by farmers.
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Explain the no-till method and discuss its pros and cons.
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Discuss the factors that affect the severity of soil loss to wind erosion.
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Aside from contraception, what can humans do to control population growth's negative effects on the environment?
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B) encourage emigration from Africa
C) discourage emigration from Africa
D) discourage population movement into sensitive environmental areas
E) discourage migration from rural areas to cities
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Urbanization drives TFR down.
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B) the idea that, without social strictures, the increase in the human population would lead to famine and war
C) the concept that human population growth would lead to greater industry and prosperity through education
D) instituting fertilizer use for agriculture
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The most accurate terms describing the trend over the past 50 years in resource use for human energy and agricultural systems are ________.
A) increasing and unsustainable
B) decreasing and sustainable
C) steady state and sustainable
D) from unsustainable to sustainable
E) rapidly increasing, moving from unsustainable to sustainable