which best describes global warming?

a. it is the changes to earths climate due to increased temperature.
b. It is the trapping of heat energy due to the addition of carbon dioxide in the atmosphere.
c. It is the increase in earths average surface temperature due to human activity.
d. It is the day to day changes in temperature, precipitation, wind, and humidity.

c. It is the increase in earths average surface temperature due to human activity.

b. It is the trapping of heat energy due to the addition of carbon dioxide in the atmosphere.

The best answer that describes global warming is option B: "It is the trapping of heat energy due to the addition of carbon dioxide in the atmosphere."

To arrive at this answer, we can break down the options and explain how they relate to global warming:

a. This option describes changes to Earth's climate due to increased temperature. While this is connected to global warming, it does not capture the full picture. Global warming involves more than just increased temperature- it encompasses various changes to Earth's climate system.

b. This option accurately describes one of the main causes of global warming. The increase in carbon dioxide and other greenhouse gases in the atmosphere traps heat energy, leading to a rise in temperatures on Earth's surface.

c. This option correctly identifies human activities as a significant factor in global warming. Human activities, such as burning fossil fuels and deforestation, contribute to the increase in greenhouse gases and the subsequent warming of the planet.

d. This option describes weather patterns and variations, rather than global warming specifically. While global warming can influence weather patterns, it is not solely defined by day-to-day variations in temperature, precipitation, wind, and humidity.

Therefore, option B is the best choice as it encompasses the core concept of global warming – the trapping of heat energy due to the addition of carbon dioxide in the atmosphere.