which describes the greenhouse effect?\n○ an artificial process\n○ a dangerous process\n○ a natural…

which describes the greenhouse effect?\n○ an artificial process\n○ a dangerous process\n○ a natural process\n○ a new process
Answer
Brief Explanations:
The greenhouse effect is a natural process by which certain gases in Earth's atmosphere trap heat from the sun, keeping the planet warm enough to support life. It has been occurring for billions of years.
Answer:
a natural process