'Diverse life forms' diaporamas de présentation

PowerLecture: Chapter 24

PowerLecture: Chapter 24. Principles of Evolution. Learning Objectives. Understand how variation occurs in populations and how changes in allele frequencies can be measured.

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Water of Life

Water of Life. Justin Borevitz Prairie Ecosystems 4/17/07. Wetlands. Fish biodiversity as a biomarker of water quality Flooding bring in fertility Diverse habitats == diverse life forms Niche exploitation

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Descent With Modification: A Darwinian View of Life

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A Brief History of the Earth

A Brief History of the Earth. Timescale. 7/8 of the entire period life has existed on earth is known as the Precambrian era. During this era, life was largely single celled, and prokaryotic. Other Eras. Following the Precambrian era came the Paleozoic, Mesozoic , & Cenozoic eras.

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Scientists of Evolution

Scientists of Evolution. People and Ideas That Contributed to the Theory of Evolution by Natural Selection. Bellwork Have slate & marker on desk. What are the four parts of natural selection? What are the 3 TYPES of evolution?

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Oceans

Oceans. Spring/Neap Tides Review Density Salinity. Your Objectives: Use the density formula to correctly figure the density of granite (continents) and basalt (ocean). We will discuss why the ocean floor (basalt) is lower than the continents (granite ).

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Conditions differ as you move away from shore.

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