The Earth is surrounded by an ocean of gases we call the atmosphere. The atmosphere is important because it contains the air most living things breathe. It also absorbs heat energy from the sun. It even recycles water by returning it back to the Earth as rain. Without the atmosphere, life as we know it could not exist on Earth. The atmosphere is important for the single reason that most living things need to breathe on Earth.
A: Right
B: Wrong
C: Not mentioned
A: Right
B: Wrong
C: Not mentioned
举一反三
- what the analogy is: which two things are being compared?The earth’s atmosphere is like a blanket of gases around the earth. It is only a thin layer but it helps to maintain the temperature of the earth, keeping us warm. It also offers a layer of protection from the intensity of the sun. A: earth’s atmosphere and a blanket B: earth’s atmosphere and gases C: earth’s atmosphere and a layer of protection D: earth’s atmosphere and a blanket of gases
- Without the atmosphere，we could not breathe． A: the air around the earth B: the height of the mountains C: the water in the ocean D: the size of the cities
- A variety of gases trapped in the Earth’s atmosphere can ensure life on Earth because they are ______.
- As we have learned, these greenhouse gases energy in the atmosphere and make the Earth warmer.
- Greenhouse gases are necessary to life because they trap energy in the atmosphere and make the Earth warmer.