Exam 19: Climate Disruption and Ozone Depletion

It is now possible to determine if the earth's climate is changing based on a few years,or by a decade or two.

One way to increase the uptake of CO₂ is to implement a massive global ____________________ program.

During the past 275 years human activities have been responsible for 70% of methane emissions.Which activity is not a source of methane?

Which of the following countries intends to become the first carbon neutral country by cutting its net carbon emissions to zero by 2030?

Although temperatures have fluctuated throughout the earth's history,scientists are greatly concerned about the current warming because ____.

Scientists studying climate change estimate the average global sea level rise by the year 2100 may be as much as _____ or higher.

The oceans absorb between 25-30% of the CO₂ in the lower atmosphere.As the oceans heat up,this absorption ____.

China and the United States together are the source of nearly half of the world's annual greenhouse gas emissions.

Summer ice in the Arctic Sea may be gone by 2040 or earlier.

Methane emissions over the past 275 years are the result of extracting fossil fuels,raising cattle and sheep,and constructing reservoirs behind large dams.

In a warmer world,which of the following organisms are likely to decline in numbers?

Nitrous oxide (N₂0)levels are rising.Each nitrous oxide molecule has how much stronger a warming potential than does a molecule of carbon dioxide?

____________________ is determined by the average weather conditions of the earth or a particular area over a long time.

The mild climate we have experienced for the past 10,000 years is likely to change rapidly in this century.

Since the beginning of the ____________________ human actions have led to significant increases in greenhouse gases in the lower atmosphere.

Which phrase best describes the earth's average surface temperature for the past 900,000 years?

Geoengineering methods to control global warming are criticized because ____.

What strategy would increase the threat of climate change?

Use the figure above to answer the following question(s) . -How does the projected rate of change from 1975-2100 compare to the rate of change from 1875-1975? How can you tell?

A warmer world is least likely to result in ____.