Communication barriers can be physical disabilities such as hearing problems or speach problems but it can also be the lack of interest, attention differences in viewpoint etc.
The answer is: [C]: "Calorie" .
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Note: The "capital "C"; which means "food calorie".
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Even though coal is one of the best ways to produce energy, it is also one of the most harmful. Breathing coal fumes can cause cancer and sometimes lead to certain death.
Answer:
The six essential nutrients include carbohydrates, protein, fat, vitamins, minerals and water.
Explanation:
:)