1 Be prepared to spend at about 3-4 hours a day with a single adult cat and more time for kittens.  How to Prepare Your Budget for Cat Adoption - Being a good caring cat owner involves many things that don't affect your wallet, like your time and love, but there are certainly costs to plan for.
Common Taxonomic Divisions. The scientific system of classification divides all living things into groups called taxa (singular, taxon). Plants are in the kingdom of Plantae. Other kingdoms include Fungi, Protista (one-celled organisms including yeasts, bacteria, and protozoans), and Animalia (animals).
The three-domain system is a way for classifying biological organisms. This classification system distinguishes between eukaryotic organisms, organisms which have cells which include a nucleus, and two types of prokaryotic organisms, organisms with cells which lack a nucleus. Over the years, scientists have developed several systems for the classification of organisms.