The air we breathe is twenty-one percent oxygen, an amount higher than on any other known world. While we may take our air for granted, Earth was not always an oxygenated planet. How did it become this way? This title tells an account of the history of atmospheric oxygen on Earth.[...]
Microbes catalyze chemical reactions in nature which control the chemistry of the environment. This work looks at these reactions and their effect on the aquatic environments from the perspective of the microbes involved. It includes introductory chapters on microbial systematics, principles of micr[...]