Genetics is the study of genes, genetic variation, and heredity in living organisms. It is generally considered a field of biology, but intersects frequently with many other life sciences and is strongly linked with the study of information systems.
It is an article of passionate faith among 'politically correct' biologists and anthropologists that brain size has no connection with intelligence; that intelligence has nothing to do with genes; and that genes are probably nasty fascist things anyway.
Richard Dawkins, in The Economist, Vol. 328 (1993)
Understanding the relationship between climate and ecosystems is crucial to preventing undesired changes to our environment, such as desertification and the loss of species. However, the multi-component and multi-scale nature of ecosystems makes them difficult to easily understand.