Enviro test 2

Question 1

Population

Answer 1

Group of the same species living in an area.

Question 2

Population Ecology

Answer 2

Study of factors causing populations to increase or decrease.

Question 3

Migration

Answer 3

Seasonal movement affecting population size temporarily.

Question 4

Population Density Formula

Answer 4

Population ÷ Area.

Question 5

Low Density

Answer 5

More resources, harder to find mates.

Question 6

High Density

Answer 6

Easier to find mates, more competition/disease.

Question 7

Exponential Growth

Answer 7

J-curve; occurs in ideal conditions but unsustainable.

Question 8

Logistic Growth

Answer 8

S-curve; slows due to limiting factors like food or space.

Question 9

Carrying Capacity (K)

Answer 9

Max sustainable population for an area.
Exceeding leads to overshoot → resource depletion → population decline.

Question 10

K-Strategists

Answer 10

Stable, long life, few offspring (e.g., humans).

Question 11

r-Strategists

Answer 11

Unstable, short life, many offspring (e.g., mice).

Question 12

Type I Survivorship curve

Answer 12

High survival until old age (e.g., humans).

Question 13

Survivorship Curves Type II

Answer 13

Constant survival rate (e.g., birds).

Question 14

Survivorship Curves Type III

Answer 14

High mortality in youth (e.g., fish).

Question 15

Current global growth

Answer 15

Exponential (J-Curve)

Question 16

Baby Boom (1946–1964)

Answer 16

High births post-WWII.

Question 17

Baby Bust:

Answer 17

Declining birth rates due to birth control, delayed marriage, and career-focused women.

Question 18

Global Growth Rate:

Answer 18

(CBR - CDR) ÷ 10.

Question 19

National Growth Rate

Answer 19

[(CBR + Immigration) - (CDR + Emigration)] ÷ 10.

Question 20

Doubling Time

Answer 20

Rule of 70 (70 ÷ Growth Rate).

Question 21

Demographic Transition Model
Phase 1

Answer 21

Preindustrial - High birth & death rates, slow growth.

Question 22

Demographic Transition Model
Phase 2

Answer 22

Transitional - Death rates drop, rapid growth.

Question 23

Demographic Transition Model
Phase 3

Answer 23

Industrial - Birth rates decline, stabilization.

Question 24

Demographic Transition Model
Phase 4

Answer 24

Post-industrial - Population declines (e.g., Italy).

Question 25

Environmental Impact of Population Growth
Pros

Answer 25

Larger workforce, innovation, extended carrying capacity.

Question 26

Environmental Impact of Population
Cons

Answer 26

Resource depletion, pollution, poverty.

Question 27

Environmental Impact of Population
Overpopulation

Answer 27

Hunger, environmental degradation.

Question 28

Sustainable Population Strategies

Answer 28

Encourage smaller families.
Improve healthcare and education (especially for women).
Economic incentives for lower birth rates.