Water.
Sound travels slowly because the amount of pressure.
There are so many examples for that in different areas, like organic germanium compounds experiment carried out in our lab recently.
Here's one link: http://www.alfa-chemistry.com/products/organic-germanium-24.htm
Active transport moves from low to high
Cellular respiration is a cellular process in the metabolism of sugar components to produce metabolites such as lactic acid, acetic acid, aldehydes, and other components. It starts with the cleaving of the sugar component (6-carbon) to 3-carbon components until it becomes pyruvate
NA? What is that?
Maybe i can help