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Bacteria can be both harmful and helpful
The sun is the source of radiation for both the earth's atmosphere and the greenhouse effect.
They are helpful because they clean out intestines. they are harmful because they can cause diseases
a bacillus bacteria
If they are ecosystem?
Bacteria can be both harmful and helpful
Sandpaper is both helpful and harmful.
they are helpful because they are
They are more helpful than harmful. My two gerbils are both helpful. They've helped me in many ways and so that's why I say they're more of helpful than harmful.
Both only when it infects it is harmful
The sun is the source of radiation for both the earth's atmosphere and the greenhouse effect.
Both
both
They are helpful because they clean out intestines. they are harmful because they can cause diseases
Both Earth and Venus have increase temperature due to a greenhouse effect. Venus has a much stronger greenhouse effect than Earth does.
computer.. both helpful and not..
a bacillus bacteria