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____ [38]
3 years ago
7

Some astronomers study the universe and all the matter in it. They want to find out how big and how old the universe is. Which s

tatement provides the most accurate description of the universe? Group of answer choices The universe is a big collection of stars called the Milky Way The universe is all the stars that can be seen in the sky at night The universe is all the planets and stars that orbit the sun The universe is all of space and all the matter and energy that space contains
Geography
2 answers:
Luden [163]3 years ago
7 0

ewweeeeeeeeeeeeeeeeeeeeee

AfilCa [17]3 years ago
4 0

Answer:

The universe is all the planets and stars that orbit the sun

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1. Limit the time that you have your AC(air conditioner) is running. Air conditioning uses a chemical called HFC(hydrofluorocarbons), and that chemical is used to keep you cool in your house. HFC is quite toxic for the environment, and it contributes to global warming, because it is called a greenhouse gas by the government. Studies show that the more air conditioning you use, the more likely that more HFC will be released into the environment, worsening the impact it has on global warming.

2. Bike, walk, or use another non-mechanized transportation more. As you have smelled or seen before, cars, buses, trains(not electronic), and many other vehicles emit smoke and other sorts of things. These vehicles emit greenhouse gases such as carbon monoxide, hydrocarbons, nitrogen oxides, and Particulate matter. All of these chemicals really harm the environment, and studies show us that cars and other vehicles produce about 75 percent of CARBON MONOXIDE pollution in the world. By driving less, or using other forms of public transportation less(non electronic), you can reduce the amount of  greenhouse gases released into the environment.

3. Use solar power. Solar power is becoming very common, and many people actually have switched to this type of power. The reason? It is very easily renewable. A reason that people should switch to solar power is because other forms of producing power  (using turbines, which uses heat, wind, water, steam. etc) have a negative impact on our environment. Solar power can help the environment and the people by reducing greenhouse gas emissions, and it also produces a low cost, low maintenance power source.

4. Don't use plastic items, since plastic production usually produces lots of Carbon Dioxide emissions. Plastic is a useful material, and about 300 MILLION TONS of it is produced every year. Now imagine what it would take to make all this plastic. Have you ever wondered how plastic is made. Plastic is made from natural materials/resources/elements that are found on the Earth. Some of these materials are cellulose, coal, natural gas, salt and crude oil, which are pretty easy to find. These materials are sent to an oil refinery, where first crude oil is refined, and then separated into lighter components which are called fractions. These fractions are then put into one of two processes, and these processes are called polymerization and poly-condensation. Both of these require specific catalysts. Polymerization uses ethylene and propylene to make its plastic. This process is complicated, but during this process, greenhouse gases such as water vapor, carbon dioxide (CO2), methane, nitrous oxide and ozone are released into the environment, and once again, they harm the environment. By using less plastic, you can add less amounts of toxic greenhouse gases into the environment

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Answered by: BB557

P.P.S This answer took forever.

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can u give your full question brooo

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