The changes talking place in our surroundings and which are useful to us are called Useful changes. The changes which are not useful but harmful are called Harmful changes
changes both harmful and useful
Useful changes to the environment include reforestation efforts to restore ecosystems and renewable energy projects to reduce reliance on fossil fuels. Harmful changes include deforestation leading to habitat loss and climate change caused by greenhouse gas emissions.
lion are useful and harmful
It is not harmful. Also it is not useful
Ozone is useful. The oxygen forms again transforms to form ozone.
useful
i think its both harmful and useful
Ozone at ground level is harmful. It is useful in stratosphere as it protects us from harmful UV rays.
It is useful because we can breathe it.
useful for dieing (;
It is USeful
A carbohydrate can be useful or harmful depending on the type that is eaten. Good carbohydrates have fiber in them.