[Grammar] Punctuation

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UM Chakma

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Hi there,

Please don't consider this an exercise. This is just to check my punctuation skill. I have given two paragraphs below; of which one is wrongly punctuated and another is which I corrected. Have I punctuated correctly?

Wrongly punctuated paragraph!
It is a well-known fact that cars and buses unlike bicycles, use lots of petrol and create a great deal of pollution, Surely something can be done about this. If we cannot get people to walk or, share vehicles we should put more pressure on scientist's to build solar powered engines. Although it may take some time to achieve this, it would be worth it? There are other alternatives, too. For example: if we all started driving electric cars, the world would be a much cleaner place

Correctly punctuated paragraph!
It is a well-known fact that cars and buses, unlike bicycles, use lots of petrol and create a great deal of pollution. Surely, something can be done about this. If we cannot get people to walk or share vehicles, we should put more pressure on scientists to build solar powered engines. Although, it may take some time to achieve this, it would be worth it. There are other alternatives too, for example, if we all started driving electric cars, the world would be a much cleaner place.
 

probus

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Although it may take some time to achieve this, it would be worth it. There are other alternatives too. For example, if we all started driving electric cars the world would be a much cleaner place.
 

Barb_D

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I'd hyphenate solar-powered engines.
 
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