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Edexcel gcse business studies revision guide pdf

Please edexcel gcse business studies revision guide pdf this error screen to 109. Please forward this error screen to 46.

Please forward this error screen to 93. This page has been archived and is no longer updated. Find out more about page archiving. Organisms are adapted to survive in different conditions. Over many generations, these adaptations have come about through variation. Variation involves small changes between organisms which may allow that organism to compete better for survival.

Variation can have environmental or genetic causes. The theory is supported by evidence from fossils and by the rapid changes that can be seen to occur in microorganisms such as antibiotic-resistant bacteria. Many species have become extinct in the past, and the extinction of species continues to happen. A place where plants, animals and microorganisms live. Organisms living in different habitats need different adaptations. In order to see this content you need to have both Javascript enabled and Flash installed.