Answer:
Global warming occurs when carbon dioxide (CO2) and other air pollutants collect in the atmosphere and absorb sunlight and solar radiation that have bounced off the earth’s surface. Normally this radiation would escape into space, but these pollutants, which can last for years to centuries in the atmosphere, trap the heat and cause the planet to get hotter. These heat-trapping pollutants—specifically carbon dioxide, methane, nitrous oxide, water vapor, and synthetic fluorinated gases—are known as greenhouse gases, and their impact is called the greenhouse effect.
Explanation:
Though natural cycles and fluctuations have caused the earth’s climate to change several times over the last 800,000 years, our current era of global warming is directly attributable to human activity—specifically to our burning of fossil fuels such as coal, oil, gasoline, and natural gas, which results in the greenhouse effect. In the United States, the largest source of greenhouse gases is transportation (29 percent), followed closely by electricity production (28 percent) and industrial activity (22 percent).
Curbing dangerous climate change requires very deep cuts in emissions, as well as the use of alternatives to fossil fuels worldwide. The good news is that countries around the globe have formally committed—as part of the 2015 Paris Climate Agreement—to lower their emissions by setting new standards and crafting new policies to meet or even exceed those standards. The not-so-good news is that we’re not working fast enough. To avoid the worst impacts of climate change, scientists tell us that we need to reduce global carbon emissions by as much as 40 percent by 2030. For that to happen, the global community must take immediate, concrete steps: to decarbonize electricity generation by equitably transitioning from fossil fuel–based production to renewable energy sources like wind and solar; to electrify our cars and trucks; and to maximize energy efficiency in our buildings, appliances, and industries.
Answer:
They want to keep memory of them and honor them by attending events for them in memory
Explanation:
Answer: According to a 2009 Citizen Corps national survey, D. 29% of Americans have not prepared because they think that emergency responders will help them.
Explanation: Citizen Corps is a program that provides training to the citizens of the United States in order for them to help in case of a natural disaster or a terrorist attack.<u> A Citizen Corps national survey which was carried out in 2009 showed that 29% of Americans failed to prepare for believing that emergency responders such as the police and the firemen would help them. </u>In that way, the correct answer is D.
The opportunity cost for the Congo to produce additional diamonds is <u>C. 4 thousand units of corn</u>.
<h3>What are opportunity costs?</h3>
Opportunity costs are the benefits of an alternative decision when the decision maker rejects the alternative.
For instance, the opportunity cost of going to college is the earnings forgone.
The opportunity cost is computed as the lost benefit when an alternative decision is not pursued.
Fractionally, the opportunity cost of producing one product A) to another (B) = Units of B / Units of A.
<h3>Data and Calculations:</h3>
United States opportunity cost to produce diamonds = 60/10 = 6
United States opportunity cost to produce corns = 10/60 = 1/6
Congo's opportunity cost to produce diamonds = 20/5 = 4
Congo's opportunity cost to produce corn = 5/20 = 1/4
Thus, the opportunity cost for the Congo to produce additional diamonds is <u>C. 4 thousand units of corn</u>.
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