Question

which are the two gases whose composition increases as we go up in the atmosphere? ​

Answer 1

Answer:

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Answer 2

Without the atmosphere, Earth would be lifeless. Carbon dioxide (CO2) and oxygen (O2) are the most important gases for living organisms. CO2 is vital for use by plants in photosynthesis, in which plants use CO2 and water to convert the Sun's energy into food energy. This food energy is in the form of the sugar glucose (C6H12O6). Plants also produce O2. Photosynthesis is responsible for nearly all of the oxygen currently found in the atmosphere.

The chemical reaction for photosynthesis is:

6CO2 + 6H2O + solar energy → C6H12O6 + 6O2

By creating oxygen and food, plants have made an environment that is favorable for animals. In respiration, animals use oxygen to convert sugar into food energy they can use. Plants also go through respiration and consume some of the sugars they produce.

The chemical reaction for respiration is:

C6H12O6 + 6O2 → 6CO2 + 6H2O + usable energy

Notice that respiration looks like photosynthesis in reverse. In photosynthesis, CO2 is converted to O2 and in respiration, O2 is converted to CO2.

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