What do you think is the biggest threat posed by global warming?

The biggest threat that global warming is starting is that there is a lot of carbon dioxide in the air the carbon dioxide warms the earth and its a threat to the wild life even the cold areas like Alaska, polar bears are in vulnerable right now and the narwhals, they are close to being extinct which isn't good some people ride bikes then drive cars to stop the carbon from making it worst anyways riding a bike is good exercise use a scooter then drive a car that has gas use a skateboard there are so many things we can use then a car and cars are expensive but using something else that doesn't  has gas is good for the environment even the smallest thing helps the planet.

Explanation:

answer(d) call 911;