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Biology 20 Chapter 3 & 4 Questions And Answers
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Biology 20 Chapter 3 & 4 Questions And Answers Dichotomous Key Identification keys that use a series of paired comparisons to sort organisms into smaller and smaller groups Biome Large ecosystems or group of ecosystems in a specific region on Earth that has a particular combination of abiot...

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  • November 12, 2024
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  • 2024/2025
  • Exam (elaborations)
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  • biology 20 chapter 3 4 questions and answers

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Biology 20 Chapter 3 & 4 Questions And
Answers

Dichotomous Key Identification keys that use a series of paired comparisons to sort

organisms into smaller and smaller groups




Biome Large ecosystems or group of ecosystems in a specific region on Earth that has a

particular combination of abiotic ad biotic factors




Habitat Where an organism lives




Niche An organism's role or function in its ecosystem




Limiting Factor Any abiotic or biotic factor that keeps a population from growing too

large




Exotic Species A non-native species that is introduced into an area; doesn't have a natural

predator

, Biology 20 Chapter 3 & 4 Questions And
Answers
Transect A long relatively narrow rectangle area marked out in a study area for the

purpose of sampling a population




Quadrat Using a grid to sample a population and determine its population size




Mitosis Cell decision that results in two identical cells from one parent cell; each new cell

has the same number of chromosome as the parent cell




Meiosis Cell division that results in four daughter cells each with half the number of

chromosomes as the parent cell




Variation Differences (visible or invisible) between members of a population ; can be a

disadvantage, advantage or have no effect




Adaptation A variation that increases an individuals chance for survival




Sexual Reproduction Joining of egg and sperm; shuffling of chromosomes results in

genetic variation

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