Global warming is caused by the Greenhouse effect that happens from pollution created by humans.
Global warming impacts the earth and the living beings that inhabit it in many different ways.
For example, because of global warming, the populations of certain types of species has decreased. The number of Adélie penguins in Antarctica has fallen from 32,000 breeding pairs to 11,000 in 30 years.
Another way climate change has impacted the earth and us, ever since climate change, the sea level has been rising more quickly over the past century.