Answer:
The most basic reason that cells are stained is to enhance visualization of the cell or certain cellular components under a microscope. Cells may also be stained to highlight metabolic processes or to differentiate between live and dead cells in a sample.
Explanation:
The main reason you stain a specimen before putting it under the microscope is to get a better look at it, but staining does much more than simply highlight the outlines of cells. Some stains can penetrate cell walls and highlight cell components, and this can help scientists visualize metabolic processes.
<u>Answer</u>: c. Natural gas.
<u>Explanation</u>:
- <em>Natural gas</em> is a fossil fuel and thus a<em> non-renewable resource.</em>
- Natural gas is widely used for the purpose of heating, cooking, and generation of electricity.
- The process of formation of natural gas takes place over millions of years from decomposing plant and animal material subjected to heat and pressure.
<em>Thus, natural gas cannot be used for the conservation of resources.</em>
