they have no natural predators
you can use blasts of warm water to kill them but may affect wildlife in the same area, and you can intoduce a predator to kill them but really either way can harm other animals. really the only sate way is to remove them by hand.
Chinook Indians do not harm the environment.
in what way and why doeswaste harm the environment?
Yes compasses can harm the environment if you lave it on the sheet .
we can harm the environment by not picing up garbage that is on the ground
Ethanol doesn't harm the environment; and any person flows vodka in a river !
Building hotels and holiday resorts does not generally harm the environment. They can harm the environment if you have to cut down a lot of trees to make room for the hotels.
Means that it can harm the environment or aquatic environment
New types of plastic which are said to be biodegrdable are available. Find out more such materials and whether do or do not harm the environment.
HOW
NO
Yes they do!