Chapter 15.2

Question 1

Signs that population is not near carrying capacity. “Due to decreased death rates and decreased birth rates”

Answer 1

Declining growth rate

Question 2

Signs that population is not near carrying capacity

“indicates people don’t run out of food”

Answer 2

Decreased death rate despite rapid population increases

Question 3

Signs that population is not near carrying capacity “Due to choice of having fewer children”

Answer 3

Declining birth rate

Question 4

amount of energy available

Answer 4

Net Primary Productivity (NPP)

Question 5

Carrying capacity on earth might be _________ people.

Answer 5

21 billion

Question 6

Only ______ would be supported by photosynthetic products.

Answer 6

Humans

Question 7

Other resources besides food that sustain populations
1.
2.
3.

Answer 7

1. clean water
2. clean air
3. energy for heating, producing and preserving food

Question 8

Resource use produces pollution and it is difficult to clean water supplies.

Answer 8

True

Question 9

One time stock resources that cannot be easily replaces

Answer 9

Non-Renewable resources

Question 10

Include many essential supplies that sustain current human population

Answer 10

Non-renewable resources

Question 11

buried remains of ancient plants transformed by heat and pressure

Answer 11

fossil fuels

Question 12

coal

Answer 12

fossil fuel

Question 13

oil

Answer 13

fossil fuel

Question 14

natural gas

Answer 14

fossil fuel

Question 15

Use of fossil fuels depends on population size and average lifestyle

Answer 15

True

Question 16

Americans are ___% of the earths population.

Answer 16

5%

Question 17

Americans consume _____% of global energy.

Answer 17

24%

Question 18

Americans consume ____ billion food calories per day. which is _____ billion more calories than needed. It is enough to feed _____ million people.

Answer 18

815 billion
200 billion
80 million

Question 19

steep decline in numbers

Answer 19

population crash

Question 20

May result if population grows larger than carrying capacity of environment

Answer 20

population crash

Question 21

repeated crashes and rebounds, “boom and bust”

Answer 21

Population cycle

Question 22

in species with high birth rates

Answer 22

Population cycle

Question 23

Boom and bust cycle may persist or population may stabilize at carrying capacity.

Answer 23

True