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Which living things are use to us?
A bee is both harmful and useful
Is nitrogen useful or harmful?
It is both because it helps us to breath but it can also stop us from breathing.
What are Useful and Harmful Changes?
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
How is media is useful and harmful for us?
media is very useful
What living things useful to us?
snails, bees
Which are harmful and useful to human being?
Ozone at ground level is harmful. It is useful in stratosphere as it protects us from harmful UV rays.
Why they are useful or harmful for us?
Second Lutenat
Information and pictures of groups of microorganism that are harmful and useful to us?
tintre
How does this radiation affect us here on earth which ones reach us and of these which are useful and which are harmful?
Its Adrian Dias
Can honey bees harm us?
Honey bees are not usually regarded as harmful, but of course they can sting, and some people are allergic to the stings, which on fairly rare occasions, can be fatal.
Are many micro-orgaisms useful?
Yes. Most microorganisms are useful, a few are harmful to us, plants, or other creatures.
What factors determine whether the ozone layer is harmful to us?
Ozone can not only be said harmful but useful too. It acts as a pollutant at the ground level.
