Download Science Chapter 9 Study Guide

Science Chapter 9 Study Guide
1. Know the difference between immigration and emigration and be able to
identify examples.
2. Know the formula to find population density and be able to find it given the
number of organisms and area.
3. Be able to identify examples of limiting resources.
4. Nonliving resources that humans obtain from ecosystems are called
_______________________.
5. If all members of a species disappear from Earth, the species is said to be
____________________________.
6. __________________________ is the mating of animals in zoos or on
wildlife preserves in order to help preserve the species.
7. A food web shows the flow of __________________ through an ecosystem.
8. Be able to identify likely limiting factors for organisms.
9. The behaviors and physical characteristics of species that allow them to
survive successfully in a changing ecosystem are called
_____________________________.
10.Be able to identify examples of how human activities may harm the balance
in an ecosystem.
11.Be able to determine the approximate carrying capacity of an environment
using a graph.
12.The number of different species in an area is referred to as its
_________________________.
13.Be able to identify carrying capacity and limiting factors on a graph.
14.Be able to describe what a graph showing exponential growth would look
like.
15.Camouflage is an example of ____________________ adaptation.
16.Be able to identify a pioneer species.
17.What is the first step of secondary succession?
18._________________________________ is the series of changes that occurs
in an area where no soil or organisms exist.
19.The _________________________________ is the process in which certain
gases trap the sun’s energy in Earth’s atmosphere.
20.Be able to identify an example of space as a limiting factor.
21.A species that influences the survival of many other species in an
ecosystem is called a(n) ________________________________________.
22.In the process of ______________________________, the organisms that
are best suited to their environments are most likely to survive and
reproduce.
23.A diverse pool of ____________________ helps ensure that individuals in a
species will pass a variety of traits to their offspring.
24.Setting aside a marsh as a wildlife refuge is an example of the
_________________________ approach to protecting biodiversity.
25.Bees and flowers are ____________________ resources found in an
ecosystem.
26.An insect looks like a leaf, so it blends in with its surroundings and is hard
for predators to see. The insect’s characteristic is an example of a
______________________________________.
27.Population size generally increases if the birth rate is
_______________________ than the death rate.
28.Be able to list biotic and abiotic resources given a picture of an ecosystem.
29.Be able to describe factors that could limit the growth of a population.
30.Be able to use a graph to speculate human effect on an ecosystem.
31.Explain why secondary succession usually occurs more rapidly than primary
succession.
32.Explain the differences among a threatened species, an endangered species,
and an extinct species.