The most abundant source of methane in the globe is coal-fired power plants.
Protozoa are Eukaryotic organisms, they show animal/plant like behaviors. Bacteria are prokaryotic, very tiny simple single celled organisms with no nucleus or mitochondria.
Animals need to eat or consume food
Explanation:
Species of rats are found throughout the order Rodentia, but stereotypical rats are found in the genus Rattus. Other rat genera include Neotoma (pack rats), Bandicota (bandicoot rats) and Dipodomys (kangaroo rats). Rats are typically distinguished from mice by their size.
Http://www.healthline.com/health-slideshow/home-remedies-for-head-lice#1
This may help :)
