Greenhouse gases are only transparent to specific wavelengths of radiation.
When the sun’s radiation hits the earth, some of it is absorbed and then released at longer wavelengths which the GHGs block from going into space, which causes the planet to warm.
Water vapour is the most abundant GHG and is responsible for 30-70% of the greenhouse effect, with carbon dioxide contributing 10-30%, methane 5-10% and ozone 3-7%.
Many scientists would agree that human-induced global warming is a product of the Industrial Revolution.
Carbon dioxide is primarily released into the atmosphere through:
Methane is emitted into the atmosphere as a result of:
Climate change is the designation given to shifts in either global or regional climate over time.
Changes in climate are measured over various amounts of time and range from decades to millions of years.
These changes may be caused by both natural processes and external forces (human activities).