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Biology : The Unity and Diversity of Life

Cecie Starr, Christine A. Evers; Lisa Starr

Chapter 48

Human Impacts on the Biosphere - all with Video Answers

Educators

Chapter Questions

01:48

Problem 1

True or false? Most species that evolved have already become extinct.

Billy Huggins
Billy Huggins
Numerade Educator
00:50

Problem 2

Passenger pigeons were driven to extinction ______
a. by introduced pathogens
b. by overharvesting
c. as a result of global warming
d. by competition with introduced birds

Charles Machakwa
Charles Machakwa
Numerade Educator
00:55

Problem 3

An ______ $\longrightarrow$ pecies has population levels so low it is at reat risk of extinction in the near future.
a. endemic
c. indicator
b. endangered
d. exotic

Charles Machakwa
Charles Machakwa
Numerade Educator
01:09

Problem 4

Sulfur dioxide released by coal-burning power plants contributes to
a. ozone destruction ________
c. acid rain
b. sea level rise
d. desertification

Billy Huggins
Billy Huggins
Numerade Educator
00:57

Problem 5

As a result of _______ pollutants in its body than a young one.
a. bioaccumulation
b. biological magnification

Charles Machakwa
Charles Machakwa
Numerade Educator
00:15

Problem 6

With biological magnification, a _______ will have the
highest pollutant load.
a. producer
c. secondary consumer
b. primary consumer
d. top-level consumer

Morgan Thompson
Morgan Thompson
Numerade Educator
01:32

Problem 7

An increase in the size of the ozone hole would be expected to ______
a. increase skin cancers
b. lower sea level
c. increase respiratory disorders
d. increase primary production in the arctic

Charles Machakwa
Charles Machakwa
Numerade Educator
01:03

Problem 8

True or false? All pollutants are synthetic chemicals.

Billy Huggins
Billy Huggins
Numerade Educator
01:28

Problem 9

Global climate change is causing
a. a decrease in sea level
c. acid rain
b. glacial melting
d. all of the above

Billy Huggins
Billy Huggins
Numerade Educator
01:19

Problem 10

Use of CFCs was banned in order to ________
a. lower sea level
c. discourage desertification
b. slow glacial melting
d. prevent ozone destruction

Billy Huggins
Billy Huggins
Numerade Educator
00:57

Problem 11

A highly threatened region that is home to many unique pecies is a(n) _______
a. ecoregion
c. biodiversity hot spot
b. biome
d. community

Charles Machakwa
Charles Machakwa
Numerade Educator
00:44

Problem 12

Biodiversity refers to _______
a. genetic diversity
c. ecosystem diversity
b. species diversity
d. all of the above

Billy Huggins
Billy Huggins
Numerade Educator
01:47

Problem 13

Restoring a marsh that has been damaged by human activities is an example of
a. globalization
c. ecological restoration
b. bioaccumulation
d. biological magnification

Kai Medina
Kai Medina
Numerade Educator
01:13

Problem 14

Individuals help sustain biodiversity by
a. reducing consumption
c. recycling materials
b. reusing materials
d. all of the above

Billy Huggins
Billy Huggins
Numerade Educator
00:26

Problem 15

Match the terms with the most suitable description.
_____ozone
_____biodiversity
_____ acid rain
_____endemic species
______biological magnification
______global climate change
_____deforestation
_____desertification

a. tree loss alters rainfall pattern and is difficult to reverse
b. can increase dust storms
c. evolved in one region and remains there
d. coal-burning is a major cause
e. results in highest pollution level at top trophic level
f. good up high, bad nearby
g. cause of rising sea level
h. genetic, species, and ecosystem diversity

Mishal Gul
Mishal Gul
Numerade Educator