Imagine that everyone in the united states chose to ride bicycles rather than drive cars. what effect would this have on your local ecosystem?

Hello Sara!

This would have a great effect on our local ecosystem, considering cars, and air pollution, are some of the biggest threats when it comes to pollution. Air pollution is the biggest threat when it comes to pollution. Smoking, driving cars, and doing really anything that involves smoke and fire, is bad for not only us, but the environment, and living things around us.

Hope this helps, and feel free to ask me for help anytime!

The answer is d. when it begins to fall back to the child's hand