Carbon Dioxide is a greenhouse gas. Which of these statements about greenhouse gases are true? (1 point)

Question

True
False
Carbon Dioxide is the primary greenhouse gas emitted through human activity.

The main human activity that emits Carbon Dioxide is burning of fossil fuels.

Photosynthesis contributes to high levels of carbon dioxide in the atmosphere.

Carbon Dioxide in the atmosphere absorbs the infrared energy the Earth emits after absorbing sunlight.

Answer 1

Here are the evaluations for each statement regarding greenhouse gases:

1. Carbon Dioxide is the primary greenhouse gas emitted through human activity.

   • True: Carbon dioxide (CO2) is indeed the primary greenhouse gas resulting from human activities, mainly from the burning of fossil fuels and deforestation.

2. The main human activity that emits Carbon Dioxide is burning of fossil fuels.

   • True: The burning of fossil fuels such as coal, oil, and natural gas for electricity, heat, and transportation is the largest single source of global greenhouse gas emissions.

3. Photosynthesis contributes to high levels of carbon dioxide in the atmosphere.

   • False: Photosynthesis actually removes carbon dioxide from the atmosphere as plants convert CO2 into glucose and oxygen. It plays a role in reducing CO2 levels.

4. Carbon Dioxide in the atmosphere absorbs the infrared energy the Earth emits after absorbing sunlight.

   • True: Carbon dioxide is effective at absorbing infrared radiation emitted by the Earth's surface, which contributes to the greenhouse effect and helps to trap heat in the atmosphere.

In summary, the true/false evaluations are as follows:

1. True
2. True
3. False
4. True