Download Cornell Notes Topic: STUDY GUIDE CSA 6 BIODIVERSITY (CH. 10

Cornell Notes
Topic:
STUDY GUIDE
CSA 6
BIODIVERSITY (CH. 10)
Name: _________________________
Period: _______________________
Date: __________________________
Essential Question: Describe the diversity of species on Earth.
1. Page 246. As human populations grow, we use more land to construct buildings and harvest
resources. In the process,, we destroy and _______________ the habitats of other species. It is
estimated that habitat ______________ causes almost 75% of the extinctions that are now
occurring. Page 241. The term ___________________, which is short for “biological diversity,”
usually refers to the number of different species in a given area.
2. Page 97. Over many generations natural selection causes the characteristics of populations
to change. A ___________ in the genetic characteristics of a population from one generation to
the next is known as ________________. Page 241. The study of _______________ starts
with the unfinished task of cataloging all the species that exist on _______________.
3. Page 241. The term ___________________, which is short for “biological diversity,” usually
refers to the number of different species in a given area.
4. Page 242. We depend on healthy _______________ to ensure a healthy biosphere that has
balanced cycles of energy and nutrients. S_______________ are part of these cycles. Many
species play important roles in ecosystems… When one species disappears from an
ecosystem, a strand in a food web is removed.
5. Page 243. Genetic diversity within populations is important to species survival. If there is
__________ genetic diversity, it is __________ likely that some individuals will be adapted to
_____________ new diseases or environmental _____________.
6. Page 246. It is estimated that habitat ______________ causes almost 75% of the extinctions
that are now occurring. Due to ____________ _________, the Florida panther is one of the
most endangered animals in North America.
7. Page 221. The movement of individuals from one area to another is migration. Movement
into an area is _________________ and movement out of an area is emigration. Page 242.
Biodiversity can affect the stability of ecosystems and the sustainability of populations.
8. Page 200. Carrying _____________ is the population size where birth rates and death rates
are equal. Another definition for carrying capacity for a particular species is the
_______________ population that its ecosystem can support indefinitely.
9. Page 247. An _________ _________ is a species that is not native to a particular region.
Exotic species can _____________ native species that have no natural defenses against them.
10.
Page 241. The term ___________________,
which is short for “biological diversity,”
usually refers to the number of different
species in a given area. Which of the
ecosystems shown in the graph has the
greatest biodiversity?
____________ ________ _____________
Summary: Biodiversity refers to the number of different species in a given area.