The technologies involved in communication tend to be complex. You certainly don't need to understand them for your ICT course. However, there are aspects of digital communications that you needs to be aware of. These relate primarily to the two types of network and the ways of connecting to the internet.
Archaeans include inhabitants of some of the most extreme environments on the planet. Some live near rift vents in the deep sea at temperatures well over 100 degrees Centigrade. Others live in hot springs (such as the ones pictured above), or in extremely alkaline or acid waters.
Many Archaebacteria live in harsh environments. KINGDOM EUBACTERIA: They are unicellular prokaryotes. Most of the bacteria (Germs) that affect your life are members of the Kingdom Eubacteria. KINGDOM PROTISTA: These organisms are placed here more because of what they are not than what they are.Kingdom Protista contains all Eukaryotes that are NOT Plants, Animal, or Fungi, more than 50,000 species in all. Kingdom Protista includes unicellular and a few simple multicellular Eukaryotes.Eukaroyotic cells have nuclei and organelles that are surrounded by membranes. The cells of multicellular protists are not specialized to perform specific functions in the organisms.KINGDOM FUNGI: Fungi are Eukaryotes, and most are multicellular.ost of the bacteria (Germs) that affect your life are members of the Kingdom Eubacteria. KINGDOM PROTISTA: These organisms are placed here more because of what they are not than what they are.