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Question
Currently, the greatest ecological crisis facing marine systems is ________.A) radiation
B) oil spills
C) plastic dumping
D) overharvesting
E) abandoned fishing nets
Answer
This answer is hidden. It contains 1 characters.
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A) Carrying capacity
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A) introduction of invasive species
B) loss of biodiversity
C) loss of arable land to expanding cities
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E) acid rain
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A) hypothesis testing
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A) This is an example of a good controlled experiment.
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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Sachiko and Fred are having a discussion about the scientific method. Sachiko makes the comment that every time she sees people carrying open umbrellas, she also sees several small car accidents. This is a(n) ________.
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B) theory about umbrellas
C) theory about car accidents
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E) observation
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How does the lesson of Easter Island apply to the modern world?
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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
E) salinization; stratification
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A) Soil Aggregation Service
B) Agricultural Standards Agency
C) Conservation Integration Service
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E) There is no Canadian agency charged with soil degradation, only volunteer firms funded by farmers.
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What are the advantages of biochar?
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The artificial provision of water to support agriculture is known as ________.
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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?
A) encourage consumption
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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Why did China institute a population control policy? How is it enforced? Why is it controversial?
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Urbanization drives TFR down.
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Malthus was responsible for ________.
A) the book The Population Bomb, which described the disastrous effects of human population growth
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
E) the political stance that the environment was important in its own right
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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