Final answer:
The greenhouse effect is the process by which certain gases in the Earth's atmosphere trap heat from the sun, warming the planet's surface. Oil and natural gas are sources of greenhouse gases, mainly carbon dioxide.
Step-by-step explanation:
The greenhouse effect is the process by which certain gases in the Earth's atmosphere trap heat from the sun, warming the planet's surface. The term 'greenhouse effect' refers to the natural feature of Earth's atmosphere that occurs when greenhouse gases absorb and re-radiate heat back down to the surface, making it warmer than it would be without these gases.
Oil and natural gas are sources of greenhouse gases, mainly carbon dioxide. The Intergovernmental Panel on Climate Change (IPCC) is a scientific body that provides assessments of climate change based on research and data from scientists around the world. The IPCC's reports are influential in shaping climate policies and international agreements.