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Measuring Populations

Measuring Populations. Holt Bacc Vans. Direct Observation. Counting all the members of the Population Example: Counting all the ants on the Aunt hill!. Indirect Observation. To observe signs of an organism Exam ple : Counting elephan ts with out any being around!. Sampling.

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Measuring Populations

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  1. Measuring Populations Holt Bacc Vans

  2. Direct Observation • Counting all the members of the Population • Example: Counting all the ants on the Aunt hill!

  3. Indirect Observation • To observe signs of an organism • Example: Countingelephants with out any being around!

  4. Sampling • Estimate the number on reasonable assumptions. • Example: Counted trees and then compared them to all the other trees!!

  5. Mark-And-Recapture • Using a mathematical formula to determine the population of an animal. • Example: When you mark an animal and let it free. Catch them and see which ones are marked.

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