BELK SCIENCE F/LIFE-MASTRG. BIOL.AC+EBK
BELK SCIENCE F/LIFE-MASTRG. BIOL.AC+EBK
6th Edition
ISBN: 9781323907634
Author: BELK
Publisher: PEARSON
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Chapter 16, Problem 5LTB

According to the generalized species-area curve, when habitat is reduced to 50% of its original size, approximately ___________ of the species once present there will be lost.

  1. 10%;
  2. 25%;
  3. 50%;
  4. 90%;
  5. it is impossible to estimate the percentage

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Which of the following is not a part of the red list criteria for "critically endangered" species?     The population is expected to decline by 25% or more within 3 years or 1 generation.   The species has a restricted range <100km2 at a single location and there is observed or predictive habitat loss, fragmentation, ecological imbalance or heavy commercial pollution.   Extinction probably is greater than 50% within 10 years or 3 generations.   The total population size is less than 200 mature individuals.
It says find the density of each habitat please help
The smallest population of a species that is likely to be able to survive in the long term is called the_________ . When suitable habitat for a given species is split up into areas that are too small to support a large enough population, this is called_______ . One way to maintain large enough populations is to set up core reserves of suitable habitat, connected by_______ .
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