Question

which results from an increase in the greenhouse effect?
○ continental shifts
○ wildfires
○ volcanic eruptions
○ global warming

Explanation:

• Continental shifts are due to tectonic plate movements, not the greenhouse effect.
• Wildfires can be caused by various factors like dry conditions, lightning, but not directly by increased greenhouse effect (though climate change from greenhouse effect can increase fire risk, but it's not a direct result like global warming).
• Volcanic eruptions are geothermal events related to Earth's interior, not the greenhouse effect.
• The greenhouse effect traps heat; an increase in it leads to a rise in global average temperatures, which is global warming.

Answer:

D. global warming