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What is Biodiversity? Biodiversity refers to the number of different species in a given area. First we have to catalog all the species. Thus far the species.
Table of Contents – pages iii Unit 1: What is Biology? Unit 2: EcologyEcology Unit 3: The Life of a Cell Unit 4: Genetics Unit 5: Change Through Time.
Starr & Taggart – 11 th Edition Evolutionary Patterns, Rates, and Trends AP Biology: Chapter 19.
C HARLES D ARWIN : T HEORY OF E VOLUTION AS A M ECHANISTIC P ROCESS JRMG Bio1 2008.
Community Ecology A Community Includes All Life in an Area.
Higher Biology Speciation. 2 By the end of this lesson you should be able to: Explain what a species is Know what is meant by a gene pool Know what happens.
11.6 Patterns in Evolution KEY CONCEPT Evolution occurs in patterns.
KEY CONCEPT Hardy-Weinberg equilibrium provides a framework for understanding how populations evolve.
11.5 Speciation Through Isolation KEY CONCEPT New species can arise when populations are isolated.
By Edward Harrison. This refers to the amount of energy fixed per unit area per unit time in an ecosystem by a particular trophic level. The net productivity.
Can – or should we – prevent extinctions?. Unknown Number of Species on Earth 1.7 million are documented – mostly insects (about 1,000,000) and plants.
