Binary fission<span> ("division in half") is a kind of asexual reproduction. It is the most common form of reproduction in prokaryotes and occurs in some single-celled eukaryotes like Amoeba and Paramecium.</span>
Against their concentration gradient means its active transport.
Diffusion is with the concentration gradient.
Osmosis is the movement of water.
In order to prevent bacteria and fungi from reducing the volume of organic matter, coal must experience rapid, anaerobic burial.
