WHAT IS LIFE ACHIEVE ACCESS ONLY >I<
5th Edition
ISBN: 9781319487317
Author: PHELAN
Publisher: INTER MAC
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Chapter 18, Problem 5MC
Summary Introduction
Introduction:
Extinction has many natural causes, but expansion of human population is currently the most significant cause.
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When an invasive species alters the community structure it is introduced to, what can the consequence be? a. extinction of economically important species b. reduced predation on some native species c. increased predation on some native species d. all of the above
Ecological dominants are
a. the most numerous or make up the most biomass within a community.
b. are species that may not be the most numerous within a community, but whose role is so significant that its absence would bring about considerable change.
c. species that are introduced into an area where they do not naturally occur.
d. the most important species on the planet.
Which of these is a true statement?a. Habitat loss is the most frequent cause of extinctions today.b. Exotic species are often introduced into ecosystems by accidental transport.c. Climate change may cause many extinctions but also expands the ranges of other species.d. Overexploitation of fisheries could lead to a complete collapse of the fishing industry.e. All of these statements are true.
Chapter 18 Solutions
WHAT IS LIFE ACHIEVE ACCESS ONLY >I<
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