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somink to do with cancer and stuff
Certain types of bacteria can be harmful to the environment. Others help with natural processes like decomposing and stuff like that. So, it depends what kind of bacteria you are talking about.
changes both harmful and useful
yes they kill more harmless insects than harmful ones.
Scientists generally agree it is not harmful except if the intensity is enough to cause heating of the tissues. For example a microwave cooker produces enough heat to cause harm, which is why the door cannot be opened while it's switched on. However it is a controversial subject that includes use of cell phones and other radio frequency transmitters. Today the focus is not on whether it is harmful, but how much and at what levels it is harmful.
Making a paper bag uses about twice as much oil as making a plastic bag.
they are not harmful to the environment
chemicals can be harmful to humans or the environment.
fire is harmful to the environment because it is a kind of gas
The harmful effects of CARS to our environment is the carbon monoxide
If it is harmful it will not survive long
Argon is chemically inert. As such it does not have any harmful effect on the environment.
yes; kerosene is harmful because it pollutes the environment and people might be sick or die and also is harmful for animals too.
no it is not
A harmful environment is one where there is some agent or condition in the environment that may cause impaired health or disease to people, plants or animals or that may damage people, plants, animals, property or other elements of the environment.
its harmful bro!!:D
they are helpful not harmful to plants