Answer:
the 3rd one
Explanation:
Because diffraction grating has light beams going in every direction and makes a rainbow.
Answer:
I'm pretty sure it's a, I'm
sorry if I'm wrong
It depends on how you use it. If an individual is using a cellphone for his/her entertainment even though the professor/teacher is having a lecture, then it is unethical. But if the individual is using his/her own phone for an emergency matter then it should be considered.
Our best estimate for the age of the universe is based on what we currently know about the universe's history is 13.772 billion years.
<h3>How to calculate the age of the universe?</h3>
There are two methods by which the scientists calculate the age of the universe:
By searching for the oldest stars
By calculating the rate of expansion of the universe and generalizing back to the Big Bang Theory.
Thus, Our best estimate for the age of the universe is 13.772 billion years.
Learn more about the age of the universe
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Answer:
Its either A or C
Explanation:
back in the days people where in a system called the Cast System in India. only the class that you were born in that is what you where. It was rare for someone to change their class if it was allowed. So im more leaning towards A