Exam 21: Climate Change and Ozone Loss

How many years do CFCs take to reach the stratosphere? 

Which statement describes the greenhouse effect? 

What might occur if climate belts move faster than trees migrate? 

The human health problems closely associated with ozone depletion include an increased incidence of heart disease.

How might pollutants affect climate change? 

The fact that increased rates of skin cancer may not become apparent until 15 to 40 years after ozone depletion has occurred illustrates the concept of lag time.

Increases in ultraviolet radiation will cause an increase in the incidence of skin cancers and eye cataracts,and will suppress the human immune system.

Coal burning,diesel engines,and open fires produce ___________________________________,which may be the second largest contributor to global warming.

Which of the following is characteristic of CFCs? 

Which measure is urged by scientists,who claim the global climate system is so complex that society will never have the level of certainty wanted by decision makers? 

Which strategy was proposed in the 1997 Kyoto Protocol to reduce global warming? 

Mankind's use of renewable energy will lessen the effects of human activities on climate change.

Which outcome of global warming is unlikely to affect food production? 

Which pair are the two predominant greenhouse gases in the troposphere? 

The ______________________________ assumes that efforts to prevent or reverse global warming will not succeed.

TEMPERATURE -According to the graphs,before 150 000 years ago,when did the Earth have a high average surface temperature?

About 90% of sunlight's melanoma-causing effects may come from exposure to ____________________ rays.

Climate change affects the entire planet and will be long-term.

The ____________________ Protocol is a treaty designed to help slow global warming.

Which niche would likely be affected by global warming?