Am I correct?
Which of the following is an example of human impact on climate changes?
• the greenhouse effect
• changes in solar output
• global warming
• changes in the tilt of Earth's axis
I'm not positive how to answer this.
Certainly b and d are not driven by humans and can be eliminated. Global warming, c, is attributed to human impact so that's a definite yes. A is the one I'm unsure about. The greenhouse effect is the name we have given to gases that cause an increase in earth's air temperature. Since it is a name that describes what is happening I don't think I would choose this as a human impact. Certainly man contributes CO2 emissions due to coal, automobile emissions, etc. and that is a human impact kind of thing but I'm inclined to think that the name itself is not. I think humans don't CAUSE the greenhouse effect since the greenhouse effect is caused by the nature of the chemicals causing that effect.
Sorry, I forgot to mark the one I think is the answer -- globa warming -- Thank you for your response. I am not a global warming fan so I wanted to be sure I answered the way they wanted me to.
Yes, you are correct. The example of human impact on climate changes from the given options is "global warming."
To arrive at this answer, you need to understand the term "global warming" and how it relates to human activities. Global warming refers to the long-term increase in Earth's average temperature due to the buildup of greenhouse gases in the atmosphere. These gases, such as carbon dioxide (CO2) and methane (CH4), trap heat from the sun and cause the Earth's surface to warm.
Human activities have significantly contributed to the increase in greenhouse gases, thus leading to global warming. Activities like burning fossil fuels (coal, oil, and natural gas) for energy, deforestation, industrial processes, and agriculture have released substantial amounts of CO2 and other greenhouse gases into the atmosphere. These emissions have amplified the natural greenhouse effect and caused the Earth's temperature to rise at an alarming rate.
Therefore, out of the given options, "global warming" is the example of human impact on climate changes.