Explain the importance of groundwater as a source of freshwater.

Bio molecules are essential to all living things. which biomolecule is “d” from the table

Can nonrenewable resources be used sustainably?

You are given an electron micrograph of a bacterial cell. in the micrograph you can clearly see three thin layers of different densities surrounding the cell. based on the micrograph, you can infer that this cell is and would appear after application of the gram stain procedure. gram-negative / pink gram-positive / purple gram-positive / pink gram-negative / purple