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Comprehensive Study Guidance for Evolution and Ecosystem Biology

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Natural Selection and Evolution

  • Natural Selection Causes Adaptation
    07:48
  • Adaptation Improves Fitness
    02:57
  • Evolution can Occur Via Natural Selection
    04:32

Evolution of Populations

  • Evolution of Populations Example 1
    03:33
  • Introduction to Evolution of Populations
    05:14

Genetic Variation

  • Sources of Genetic Variation
    02:16
  • Sexual Reproduction and Recombination
    05:08
  • Mutations
    06:42

Genetics and Allele Frequencies

  • Allele Frequencies
    06:36
  • Mendelian and Population Genetics
    04:26
  • Genetics and Allele Frequencies Example 1
    02:56

The Hardy-Weinberg Principle

  • Predicting Allele or Genotype Frequencies Using Hardy-Weinberg
    03:31
  • Testing if a Population is in Hardy-Weinberg Equilibrium
    08:26
  • B. Calculating Allele Frequency from a Genotype Frequency
    03:20

Assumptions of the Hardy-Weinberg Principle

  • Five Assumptions of Hardy-Weinberg Equilibrium
    06:16
  • Assumptions of the Hardy-Weinberg Principle Example 1
    04:13

Non-Random Mating

  • Non-Random Mating
    04:09
  • Non-Random Mating Example 1
    04:19

Genetic Drift

  • Genetic Drift Example 1
    02:00
  • Genetic Drift Example 2
    02:37
  • Genetic Drift
    05:06

Gene Flow

  • Gene Flow Example 1
    04:34
  • Gene Flow
    01:43

Introduction to Ecology

  • Levels of Ecological Study
    05:01
  • Introduction to Ecology Example 1
    02:31
  • Environment vs. Habitat vs. Niche
    01:57

Introduction to Ecosystems

  • Grazing & Detritus-Based Food Chains
    03:29
  • Introduction to Ecosystems Example 2
    01:57
  • Introduction to Ecosystems
    04:07

Energy Flow Through Ecosystems

  • Gross Productive Energy vs. Assimilated Energy
    05:28
  • Energy Efficiency in Ecosystems
    06:28
  • Energy Flow Through Ecosystems Example 2
    07:07

Energy & Biomass Pyramids

  • Energy & Biomass Pyramids
    05:41
  • Energy & Biomass Pyramids Example 1
    03:41

Factors Impacting Primary Production

  • Primary Production in Aquatic Ecosystems
    04:36
  • Factors Impacting Primary Production Example 1
    02:31
  • Primary Production in Terrestrial Ecosystems
    02:22

Biogeochemical Cycles

  • Biogeochemical Cycles Example 2
    02:40
  • Carbon Cycle
    04:20
  • Nitrogen Cycle
    08:32

Introduction to Terrestrial Biomes

  • Introduction to Terrestrial Biomes Example 2
    01:29
  • Introduction to Terrestrial Biomes
    01:55
  • Introduction to Terrestrial Biomes Example 1
    00:49

Terrestrial Biomes: Near Equator

  • Terrestrial Biomes: Near Equator Example 1
    03:03
  • Savannas (Tropical Grasslands)
    01:02
  • Tropical Rainforests
    01:22

Terrestrial Biomes: Temperate Regions

  • Temperate Grasslands (Prairie/Steppe)
    00:51
  • Terrestrial Biomes: Temperate Regions Example 1
    01:59
  • Temperate Broadleaf/Deciduous Forests
    01:00

Terrestrial Biomes: Northern Regions

  • Tundras
    00:58
  • Terrestrial Biomes: Northern Regions Example 1
    05:07
  • Northern Coniferous Forests (Boreal Forests/Taiga)
    01:03

Introduction to Aquatic Biomes

  • Zonation in Marine Biomes & Lakes
    04:38
  • Seasonal Turnover & Ocean Upwelling
    03:57
  • Introduction to Aquatic Biomes Example 3
    03:00

Freshwater Aquatic Biomes

  • Wetlands
    01:29
  • Estuaries
    01:51
  • Streams & Rivers
    01:41

Marine Aquatic Biomes

  • Intertidal Zones
    01:43
  • Coral Reefs
    01:30
  • Marine Benthic Zone
    01:47

Biogeography

  • Biogeography Example 2
    03:26
  • How Ecosystems Impact Species Distribution
    01:12
  • Biogeography Example 1
    02:43

Earth's Climate Patterns

  • Earth's Climate Patterns Example 1
    01:36
  • Earth's Climate Patterns Example 3
    01:36
  • Earth's Climate Patterns Example 5
    03:01

Conservation Biology

  • Biodiversity Hotspots and Endangered Species
    04:32
  • Biodiversity and Sustainability
    05:06
  • Pollution and Climate Change
    03:36