To start and keep a fire burning requires four elements: fuel, oxygen, an ignition source, and a chemical chain reaction. A few examples will illustrate why each of the four elements is. necessary. Hydrocarbon Safety: Understanding Flash Point. You are using a butane cigarette lighter.
Germ is non medical term of microorganism which includes parasite, amoeba, fungus, bacteria, richetchia, virus, and so many others. Bacteria is one of the germ. usually the germ causes disease, but some germ are good for us, so called friendly germ. 25 people found this useful.
For example, some bacteria use sulfur instead of oxygen in their metabolism. Bacteria are incredibly varied, and incredibly abundant. To give some kind of organization to the multitude, bacteria are typically divided into four phyla: the cyanobacteria, spirochetes, gram-positive bacteria, and proteobacteria. Cyanobacteria are photosynthetic, like plants, which means that they use the sunÃs energy to make food for themselves.