Question

1. which correctly shows the sequence of events for human - caused climate change? (1 point)

humans burn less fossil fuels → greenhouse effect decreases → earths temperature rises
humans burn more fossil fuels → greenhouse effect increases → earths temperature rises
humans burn less fossil fuels → greenhouse effect increases → earths temperature drops
humans burn more fossil fuels → greenhouse effect decreases → earths temperature rises

Explanation:

To determine the correct sequence, we analyze the relationship between fossil fuel burning, the greenhouse effect, and Earth's temperature:

1. Burning fossil fuels (like coal, oil, gas) releases greenhouse gases (e.g., CO₂). When humans burn more fossil fuels, more greenhouse gases are emitted.
2. Greenhouse gases trap heat in the atmosphere, so an increase in these gases strengthens the greenhouse effect.
3. A stronger greenhouse effect leads to more heat being trapped, causing Earth's temperature to rise.

Now we evaluate each option:

• First option: Burning less fossil fuels would reduce greenhouse gases, weakening the greenhouse effect, and Earth's temperature would not rise. So this is incorrect.
• Second option: Burning more fossil fuels increases greenhouse gases, strengthening the greenhouse effect, which causes Earth's temperature to rise. This matches the correct relationship.
• Third option: Burning less fossil fuels would not increase the greenhouse effect, and a stronger greenhouse effect wouldn't cause temperature to drop. Incorrect.
• Fourth option: Burning more fossil fuels would increase, not decrease, the greenhouse effect. Incorrect.

Answer:

B. Humans burn more fossil fuels → Greenhouse effect increases → Earth's temperature rises