Stimulating formation of thrombocytes
The noun form of the adjective 'helpful' is helpfulness.The word 'helpful' is the adjective form of the noun help.
Gps is helpful because it helps you find location and where you are and Gps are known to be in cars.
They are helpful because they clean out intestines. they are harmful because they can cause diseases
A telescope is the most helpful tool when observing the moon.
Sometimes bacteria can be helpful. If we didnt have bacteria we wouldn't have some medicine or cheese or yogurt etc.
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