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The arguments that favour the fact that about 2 billion years very less amount of oxygen was present in the atmosphere.

The arguments that favour the fact that about 2 billion years very less amount of oxygen was present in the atmosphere.

Earth System History

Earth System History

4th Edition

ISBN: 9781429255264

Author: Steven M. Stanley

Publisher: MAC HIGHER

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Question

Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 12, Problem 4RQ

To determine

The arguments that favour the fact that about 2 billion years very less amount of oxygen was present in the atmosphere.

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Chapter 12, Problem 3RQ

Chapter 12, Problem 5RQ

Chapter 12 Solutions

Earth System History

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Ch. 12 - Prob. 11RQ Ch. 12 - Prob. 12RQ