Chapter16.2

Question 1

harvested from natural areas

Answer 1

biological resources

Question 2

Biological resource: wood for _____ and ______.

Answer 2

fuel and lumber

Question 3

Biological resource: Shellfish for _____.

Answer 3

proteins

Question 4

Biological resource: Algae for ______.

Answer 4

gelatins

Question 5

Biological resources: Herbs for ________.

Answer 5

medicines

Question 6

_______ _______ impact human economies.

Answer 6

Wild species

Question 7

all of the organisms living together in a particular habitat area

Answer 7

biological community

Question 8

the role or “job” of the species

Answer 8

Ecological niche

Question 9

Humans benefit from the community of?

Answer 9

species

Question 10

species that survives by eating another species

Answer 10

predator

Question 11

leading cause of food-borne illness in the United States

Answer 11

Salmonella

Question 12

How many people are affected by Salmonella each year?

Answer 12

2-4 million

Question 13

How many people die each year from infection from salmonella?

Answer 13

400-600

Question 14

Salmonella is ____ ________ ______.

Answer 14

undercooked poultry products (eggs)

Question 15

introduction of one species to reduce another species that requires the same resources

Answer 15

competitive exclusion

Question 16

Hen digestive systems are deliberately infected with harmless bacteria.

Answer 16

True

Question 17

Harmless bacteria establish in the ______.

Answer 17

intestine

Question 18

______ are less likely to host Salmonella

Answer 18

chicks

Question 19

plays a key role in the food web of an ecosystem and has an unusually strong effect on the community

Answer 19

Keystone species

Question 20

removal of keystone species may cause web of life to collapse.

Answer 20

True

Question 21

Mid-1920’s: Gray wolves were ______ within Yellowstone Park

Answer 21

exterminated

Question 22

Aspen, cottonwood, and willow trees declined due to increased predation by elk.

Answer 22

True

Question 23

In the 1990s, wolves were reintroduced

Answer 23

True

Question 24

Trees rebounded because of beneficial effects on beavers, warblers, insects, and fish that depend on shelter, food, and shade

Answer 24

True

Question 25

all of the organisms in a given area, along with their nonbiological environment

Answer 25

Ecosystem

Question 26

Energy is captured and converted to pass through trophic levels in the ecosystem

Answer 26

Energy Flow

Question 27

Primary energy source for most ecosystems

Answer 27

Sun

Question 28

Convert sun energy into chemical energy.

Answer 28

Producers

Question 29

Chemical energy is passed through trophic levels.

Answer 29

True

Question 30

Only ____% of the energy in one level can be converted to biomass of the next level.

Answer 30

10

Question 31

More diverse ecosystems produce more biomass

Answer 31

True

Question 32

essential mineral nutrients that pass through a food web are recycled in the environment.

Answer 32

Nutrient cycling

Question 33

organisms found in soil that play important roles in nutrient cycling

Answer 33

soil community

Question 34

bacteria and fungi that break down complex molecules into simpler ones

Answer 34

decomposers

Question 35

instinctive desire to commune with nature

Answer 35

Biophilia

Question 36

25 natural areas that make up less than 2% of earth’s surface but contain up to 50% of all mammal, Bird, reptile, amphibian, and plant species.

Answer 36

BIODIVERSITY “HOT SPOTS”

Question 37

Ways to preserve habitat is to reduce conversion of lands to _______ ________.

Answer 37

agricultural production

Question 38

Eating lower on the food chain.

Answer 38

way to preserve habitat

Question 39

Reducing use of wood and paper production

Answer 39

way to preserve habitat

Question 40

Growth rate influences how rapidly that species can attain a target population size.

Answer 40

True

Question 41

Species with ____ growth rates recover quickly in ideal environments.

Answer 41

high

Question 42

Horseshoe Crabs

Answer 42

High growth rate

Question 43

Species with ______ growth rates may take decades to recover.

Answer 43

low

Question 44

California condors

Answer 44

low growth rate

Question 45

Greater risk for small populations with ______ growth rates.

Answer 45

slow

Question 46

The longer a population remains ____ the greater the risk of complete elimination

Answer 46

small