Question

Which of the following statements about climate change is true?

1) Photosynthesis helps mitigate the effects of carbon dioxide on the atmosphere
2) The chemical composition of the atmosphere can alter the amount of heat it traps
3) Eruptions of carbon dioxide from volcanoes contributes to the concentration of gases in the atmosphere
4) All of the above

Answer 1

All provided statements about climate change are true: Photosynthesis mitigates CO2 effects, atmospheric composition can trap heat, and volcanic eruptions contribute gases to the atmosphere.

Step-by-step explanation:

Climate change is a complex environmental issue influenced by various factors. The following statements are true regarding this topic:

• Photosynthesis helps mitigate the effects of carbon dioxide on the atmosphere by converting CO2 into oxygen and organic compounds, hence acting as a carbon sink.
• The chemical composition of the atmosphere can alter the amount of heat it traps, with greenhouse gases like carbon dioxide and methane increasing Earth's temperature.
• Eruptions of carbon dioxide from volcanoes contribute to the concentration of gases in the atmosphere, although their contribution to global warming is typically smaller than human activities such as burning fossil fuels and deforestation.

All these factors collectively demonstrate how natural processes and human activities contribute to the global issue of climate change.