Yes, the sentence is correct. It expresses the belief held by many that monotheism is the only way of life.
I would argue strongly that this is not correct. Monotheism is a philosophy or belief, and does not by itself refer to a specific 'way of life'.
Yes, it is a complete, correct sentence.
That sentence is not correct. I can't even tell what you are trying to say.
Yes, that's a correct sentence.
The sentence 'Correct the sentence.' is a correct sentence. The subject is implied 'you'; the verb is 'correct'; the direct object is 'sentence'; and it is a complete thought. These are all the elements required for a complete sentence.
It is not a sentence.
The correct sentence is: Are you running in the race for life next week? are and running = verbs
Example sentence - The exploration of the new area led them to believe there could be other life forms.
Yes.
Yes, that looks correct.
in the celebration of love of a life time
Most Americans believe in the afterlife. (life after death)
Many Scientists believe other life is discoverable.