[amp_mcq option1=”Oxygen” option2=”Nitrogen” option3=”Ozone” option4=”Helium” correct=”option3″]
The correct answer is C. Ozone.
Ozone is a molecule that consists of three oxygen atoms. It is found in the stratosphere, which is the layer of the atmosphere that is about 10 to 50 kilometers above the Earth’s surface. Ozone absorbs ultraviolet radiation from the sun, which helps to protect life on Earth from the harmful effects of this radiation.
Oxygen is a molecule that consists of two oxygen atoms. It is the most abundant gas in the Earth’s atmosphere, making up about 21% of the air. Oxygen is essential for life, as it is used in cellular respiration to produce energy.
Nitrogen is a gas that makes up about 78% of the Earth’s atmosphere. It is a relatively inert gas, meaning that it does not react easily with other substances. Nitrogen is important for plant growth, as it is used in the formation of proteins and nucleic acids.
Helium is a gas that is the second most abundant element in the universe. It is a very light gas that does not react with other substances. Helium is used in balloons, blimps, and other applications where a light gas is needed.
In conclusion, the correct answer is C. Ozone. Ozone absorbs ultraviolet radiation from the sun, which helps to protect life on Earth from the harmful effects of this radiation.