What is a non-native species?

on-native species can become such a common part of an environment, culture, and even diet that little thought is given to their geographic origin. For example, soybeans, kiwi fruit, wheat, honey bees, and all livestock except the American bison and the turkey are non-native species to North America.

Explanation:

the contamination

we are putting to many trash.

i think its both a and b