Archaean
(Science: geology) The earliest period in geological period, extending up to the Lower silurian. It includes an azoic age, previous to the appearance of life, and an eozoic age, including the earliest forms of life.
this is equivalent to the formerly accepted term azoic, and to the eozoic of Dawson.
If the balance of nature is left untouched, landscapes can change dramatically over time. A previous ecosystem is supers..
This tutorial investigates the genetic diversity in more detail. It also delineates how certain alleles are favored over..
Mammals are a diverse group of organisms, where most of them develop their offspring within the uterus of the mother. Ov..
This tutorial looks at the relationship between organisms. It also explores how energy is passed on in the food chain an..
New Zealand is known for its unique biodiversity, caused by its remarkable geography and geologic history. Breaking away..
Part of the genetic information is devoted to the synthesis of proteins. mRNA, a type of RNA, is produced as a transcri..