Which one of the following is not an example of geoengineering?
Erecting large fields of wind turbines to generate electricity to power automobiles
In
... [Show More] the United States, global climate change skeptics and deniers are largely sorted:
Along political lines
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Deliberate campaigns of misinformation with the intent to create mistrust in climate science have been vigorously pushed by:
Organizations and corporations (such as oil companies) who stand to lose profits if fossil fuel use is reduced
The sharp decrease in atmospheric 14C (Carbon-14) in the past decade is directly related to:
Increased use of in fossil fuels
The Industrial Revolution resulted in many changes to farms in the United States, and it:
Increased the efficiency of farming resulting in fewer, but larger farms.
The inside of a car (or greenhouse) heats up in the presence of sunshine because:
The energy from infrared radiation is trapped in the car.
The most dramatic temperature shifts in the past few decades have been:
in the north and south polar regions.
Discussing the consequences of global climate change at a conference, representatives of a developing nation suggest that those nations that contribute the most greenhouse gases (GHGs) to the atmosphere should contribute the most to paying for adaptive responses worldwide. Further, this representative pointed out that her poor country contributes less than 1% of the annual GHGs and has less than 0.1% of the world's wealth. This representative's appeal represents:
The polluter pays and equity principles.
The development of new varieties of grain crops increased productivity by increasing the:
size and number of seeds
The most effective way to reduce the GHG emissions is to increase:
energy efficiency and renewable energy
A farmer is tired of watching crops die in the field from several pest species. She decides that next year she is going to use every type of ecological pest control she can find to address the problem. Over the winter she gets ready, ordering pheromones that interfere with reproduction of the pests, sterile male flies that will try to reproduce with some of the pest flies, and wasps that lay their eggs in the larvae of another pest. It is expensive, but she thinks this should work well. Which of the following forms of control is she not using?
Cultural control
Sustainable agriculture in the long term will require:
decreasing the use of fossil fuels and synthetic fertilizers.
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Global warming is raising sea levels because of:
melting ice and thermal expansion.
Food safety issues of transgenic crops include:
the promotion of antibiotic resistance in pathogens and new allergic properties in crops.
Climatologists warn of a tipping point when global temperatures trigger unavoidable catastrophic events and sea levels rise more than 25 feet. What single event would cause the sea level to rise that much?
Melting of the Greenland Ice Sheet
One ongoing concern about transgenic crops that produce pesticides is that this trait may:
kill other insects that are not pests.
If the Earth had no atmosphere:
The biogeochemical cycles and climate on Earth would be much different.
Herbicides would be most useful in combating:
Weeds that infect our agricultural fields.
War is most likely to contribute to famine:
Where poverty, food production, and distribution are already problematic. [Show Less]