Life on Earth is divided among three domains, or large groupings. Two of these, Archaea and Bacteria, are comprised exclusively of microbes. The third group, Eukaryota, contains both multicellular and microbial life, according to the University of California Museum of Paleontology. This classification system developed in response to a dawning awareness that much of life's diversity is confined to microbes.Know More
Bacteria are among the oldest living things on Earth. Fittingly, this group is also one of the most genetically and morphologically diverse. Some bacteria are destructive to plants and animals, while others live in symbiosis with them. Others are important commercially or as the base of the food chain, as reported by UCMP.
Archaea are some of the hardiest organisms on Earth. This domain is home to the so-called extremophiles that make their living in the superheated water of hot springs as well as hypersaline lakes and deep-sea seeps. Archaea are also abundant among the ocean's plankton. According to UCMP, Archaeans' affinity for extreme environments makes them difficult to culture in the lab.
The third major classification for life is Eukaryota. Eukaryotes are the group that includes all animals, plants and fungi. The group also includes microbes known as protists. This group includes the amoebae and radiolaria.Learn More
Many types of sponges exist within the animal kingdom, including the black-ball sponge, boring sponge, branching tube sponge, giant barrel and green finger sponges, and many more. Sponges live primarily in aquatic environments, and they are found on ocean floors around the world. They vary in size and habitat; some are large and have multiple branches like trees, while others contain single stocks and have hard shells.Full Answer >
Climate can be divided into five main types, which are tropical, dry, temperate, cold and polar. Within each climate type, there are further sub-divisions determined by local weather patterns and conditions. Two main variables that determine the exact climate type of an area are the average air temperature and precipitation levels. The type of climate that a region enjoys largely determines local life diversity.Full Answer >
In the three-sector theory of economics, the business sector is divided into three types: the primary sector of raw materials, the secondary sector of manufacturing, and the tertiary sector of sales and services. Additionally, some modern theories further elaborate upon the tertiary sector, creating from it a quaternary sector that pertains to information services and a quinary sector related to scientific and cultural advancement.Full Answer >
Acorns are divided into two main types for consumption: sweet and bitter. Acorns are the nut of the oak tree, and each type of oak has its own unique acorn.Full Answer >