Global Warming: Causes and Impacts

What are the main causes of global warming?

A. Deforestation

B. Carbon dioxide emissions

C. Methane emissions

D. All of the above

Answer:

D. All of the above

Global warming is primarily caused by the increasing concentration of greenhouse gases in the Earth's atmosphere. The main contributors to these gases are human activities such as deforestation, burning fossil fuels, and industrial processes. Among the greenhouse gases, carbon dioxide (CO2) and methane (CH4) are the most significant ones.

Deforestation leads to the release of stored carbon in trees, reducing the planet's ability to absorb carbon dioxide from the atmosphere. Carbon dioxide emissions from burning fossil fuels, such as coal, oil, and natural gas, are a major source of greenhouse gases. Methane emissions, produced by agricultural activities, landfills, and the oil and gas industry, also contribute significantly to global warming.

As these greenhouse gases trap heat in the Earth's atmosphere, they cause the planet's temperature to rise, resulting in global warming. The impacts of global warming are far-reaching and include rising sea levels, more frequent and severe weather events, and threats to biodiversity and ecosystems.