Campbell Biology: Australian And New Zealand Edition + Mastering Biology With Etext
Campbell Biology: Australian And New Zealand Edition + Mastering Biology With Etext
11th Edition
ISBN: 9781488687075
Author: Lisa, A. Urry
Publisher: PEARSON
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Chapter 54.4, Problem 1CC

Describe two hypotheses that explain why species diversity is greater in tropical regions than in temperate and polar regions.

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The most plausible hypothesis to explain why species richness is higher in tropical than in temperate regions is thata) tropical regions generally have more available water and higher levels of solar radiation.b) diversity increases as evapotranspiration decreases.c) higher temperatures cause more rapid speciation.d) tropical communities are younger.
briefly explain why there is species variation?
Habitat fragmentation can lead to: a)The disappearance of the matrix due to decreased habitat heterogeneity b) Changes in patch use by animals, with smaller patches leading increased size of home range or movement for many animals   c) Variation in microenvironment near the edge of the patch with negative consequences for diversity

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Campbell Biology: Australian And New Zealand Edition + Mastering Biology With Etext

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