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some useful ones are;
cooking chips
perming lotion making hair curly or straight
Ozone in the upper atmosphere absorbing ultra-violet rays and changing them into normal oxygen.
Harmful ones are;
acid rain
rust
chemicals in an anti-spot cream reacting with a silver necklace, turning it black
Exhaust fumes
Wiki User
∙ 14y ago
Wiki User
∙ 15y agoYour question does not contain enough information to be answered. What reactions? In what? To what?
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What are some of the more explosive reactions?
i dont know many examples of harmful or useful explosive reactions but i know one of each. for useful: using explosives for mining and the burning of gas in your car to let you drive around. for harmful: bombs.
Is natural gas useful or harmful?
it is useful
Is chlamydomonas harmful or useful?
Clamidamonas are photosynthetic creatures.They are not harmful.
How is media is useful and harmful for us?
media is very useful
Acid rain corrodes a limestone building is it useful or harmful?
harmful
Are chemical reactions useful?
yes some chemical reactions are harmful to us. as digestion of food, photosynthesis, decomposition of organic waste are some examples of the useful chemical reactions.
Is there more useful reaction than harmful?
Your question does not contain enough information to be answered. What reactions? In what? To what?
Are lions harmful or useful?
lion are useful and harmful
What are some of the more explosive reactions?
i dont know many examples of harmful or useful explosive reactions but i know one of each. for useful: using explosives for mining and the burning of gas in your car to let you drive around. for harmful: bombs.
Is a ameoba harmful or useful?
It is not harmful. Also it is not useful
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
Is a butterfly useful or harmful?
useful
You cook some chips in the oven useful or harmful?
i think its both harmful and useful
Is natural gas useful or harmful?
it is useful
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.
Is oxygen useful or harmful?
It is useful because we can breathe it.
Is lassa virus harmful or useful?
useful for dieing (;
