Environmental Science: A Study of Interrelationships (Enger) 13th Edition

Chapter 7: Populations: Characteristics and Issues

Practice Quiz

1
Birthrate is the
A)number of individuals born minus the number of deaths per year per 1000 individuals.
B)number of individuals born per 1000 women per year.
C)number of individuals born per 1000 individuals per year.
D)None of the above are correct.
2
K-strategists
A)are small organisms.
B)are long-lived organisms.
C)produce many offspring.
D)All of the above are correct.
3
The current world-wide rate of annual increase in the human population (1.2 percent) will double the world's population in approximately
A)25 years.
B)100 years.
C)58 years.
D)10 years.
4
The rate at which the human population has been growing is
A)decreasing.
B)increasing.
C)staying constant.
D)unknown.
5
Which country had a negative rate of natural increase (%) in population in 2008?
A)USA
B)Mexico
C)Korea
D)Russia
6
By feeding plants to animals, and harvesting animal products, what percent of the energy in the original plant is lost?
A)50
B)75
C)90
D)95
7
Demography is the study of animal populations and the factors that affect them.
A)True
B)False
8
Birthrate is termed "natality."
A)True
B)False
9
Availability of raw materials may affect the future of human population growth.
A)True
B)False
10
Social factors do not influence human population growth.
A)True
B)False
11
The size of the population of a particular organism that can be supported by the local environment is known as the
A)altered threshold of that organism.
B)biotic potential of the population.
C)carrying capacity.
D)environmental resistance.
12
The r-strategy in reproduction includes the production of offspring which
A)will live in a climax community.
B)are provided with little food and parental care.
C)have lots of energy invested in each.
D)emphasize competitive ability over numbers.
E)are few in number.
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