well ,I was looking for an answer for this question at last i got it!!
the answer was:there are some physical change that are really harmful
example:weight gain,diseases etc....
useful changes
Weathering is harmful to people because it changes the environment and can cause us to get sick from season changing.Weathering can also cause great damages to villages because of landslides.
yes very
a little
subsurface is less harmful
Mixtures and substances such as pesticide runoff can pollute streams and water. These same substance help crops be more productive, but they also pose serious health problems.
changes both harmful and useful
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
it is useful because it can aware all the peoples to now about it and also to protect or environment to such harmful effects
it changes the temperature and weather changing.Why? because it affects us harmful effects.
scratch paper
lion are useful and harmful
It is not harmful. Also it is not useful
To minimize effects of changing environment, we must do things differently. We must plant trees.
Ozone is useful. The oxygen forms again transforms to form ozone.
Harmful, because petrol fumes are produced by various engines that are considered to be harmful. Also, they pollute the environment.
Global warming, Acid Rain, Depletion of the Ozone Layer
useful