Answer:
B
Explanation:
because the sandpaper is rougher than the flat table.
Answer:
Two-thirds of a cell is water, which means that two-thirds of your whole body is water. The rest is a mixture of molecules, mainly proteins, lipids and carbohydrates.
Answer:
because not every virus or disease has the same DNA or RNA
If we had no cilia in our trachea, our lungs would be filled with dust and microorganisms that we breathe in.
