If im correct 60,000 years ago
Answer:
It helps us to develop new technologies.
Explanation:
Hope this helped! :)
The greenhouse effect is related to the increase in the average surface temperature which is considered "global warming". Global warming is the result of an increase in gases like methane, carbon dioxide, and other factors that lead to a rise in the planet's temperature.
Metamorphic rock forms as a result of heat and pressure.
A. heat and pressure.
