Why are nonnative species a threat to biodiversity? • They often use up resources that other organisms need.
O They are not
able to successfully breed in the wild.
•
They release pollution into many environments.
O They easily contract and spread diseases to other organisms.

yeah so

Explanation:

They use up resources which causes native species to los either shelter or food. Some times the non-native species kills the native

bacteria could be both, harmful and to us. harmful bacteria could make us sick and probably even by getting the chances of getting a disease, but good bacteria fight it off with your immune system. there is always bacteria everywhere we go. we need to make sure to wash our hands after using the restroom, before eating, after eating, after petting an animal too. so you see, bacteria is everywhere and is harmful or . i hope this . : ) : ) : )