the nutrients which provide a source of quick energy are

proteins
carbohydrates
fats
vitamins.

The answer would be carbohydrates.

Carbohydrates provide diabetics with the opportunity to raise their blood sugar. But, for normal people, Carbohydrates provide people with the energy they need to do day-to-day tasks.

I hope this helped!

meiosis is the correct answer

the cost of mining is extremely low compared to the money earned from mining, creating income to improve the environment.