Answer:C:Carbon
H:Hydrogen
O:Oxygen
Explanation:Every element is represented by a letter that is easy to tell which element it is so you don't have to get confused.
If a sample is packed poorly, the sample will not heat evenly and will take longer to melt.
Answer: C. <em><u>She should decrease the frequency of the wave</u></em>
<em>Explanation: this makes the waves shorter causing it to become louder the the human ear!</em>
<h3><u><em>hope it helps</em></u></h3>
These nutrient classes can be divided into macronutrients (nutrients required in large quantities) and micronutrients (nutrients required in tiny quantities). Carbohydrates, proteins, lipids, fiber, and water are macronutrients, whereas vitamins and minerals are micronutrients.
