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LEAPS > LEAPS midterm > Flashcards

LEAPS midterm Flashcards

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1
Q

How many species of plants are grown for human needs?

A

100 out of 350k

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2
Q

What are the 4 Pop. Growth surges?

A
  1. Use of tools fire, and cultural revolutions
  2. the first agricultural evolution, growing crops
  3. the medical revolution 200 years ago
  4. Each surge increased the pop. 10 fold
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3
Q

About how many kids are born per day?

A

385k

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4
Q

About how many kids are born per second?

A

2-3

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5
Q

What factors decreased mortality rates?

A

Safer H20 supplies
advances in agriculture
better health care

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6
Q

About how many people lived in urban areas at the beginning of the 20th century?

A

about 15%

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7
Q

About how many people were living in urban areas at the end of the 20th century?

A

about 50%

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8
Q

about what is the estimated pop from 2024-2050+

A

8-15 billion

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9
Q

What countries are experiencing a decline in population?

A

Russia, Japan, South Korea

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10
Q

What are some reasons for declining populations

A

Millenials are not having kids until their careers are set
more individuals desire to have less kids to improve living standards

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11
Q

What are factors that affect fertility rates?

A

Age of women when marrying
birth control
children needed in work force
cost of raising children

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12
Q

What percent of the world has a form of family planning

A

90%

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13
Q

What countries has family planning been successful in?

A

Brazil, China, Cuba, Costa Rica, Indonesia etc

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14
Q

What countries has family planning been unsuccessful in?

A

India, Pakistan, Sub Saharan countries

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15
Q

Factors that improve death rates

A

Education, immunization, b etter food distribution

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16
Q

How much as life expectancy risen from 1970

A

4 months each year

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17
Q

What was the life expectancy in the Paleolithic age?

A

33 years old

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18
Q

When does population growth stabalize?

A

When death rate is equal to birth rate

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19
Q

How can we curbe population growth?

A

By using universal planning

and by reducing poverty and economic developement

20
Q

About how much meat and dairy does 20% of the world consume

A

80% of meat and dairy

21
Q

What are 3 major crops humans use?

A

Wheat
Rice
Corn

22
Q

What are some crops that humans use

A

Grapes
Bananas
Barley
Onions
Apple

23
Q

What are the primary crops of northern Europe and Asia

A

Barley, oats and potatoes

24
Q

What are the primary crops of Africa, Brazil, the south pacific

A

Millet and sorphgum

25
Q

What are the 20% of all countries that consume 80% of milk and meat

A

North America, Europe and Asia

26
Q

What percent of grain grown in the US is used for animals

A

90%

27
Q

About how much of Japans protein comes from marine life?

A

1/2 of all the protien in Japan

28
Q

What percentage of organisms caught from the sea arent wanted?

A

40%

29
Q

About how much of the population is malnourished?

A

1/4 of the pop. or 1.5 biollion

30
Q

What countries have the biggest amounts of malnourished people?

A

Sub saharan Africa, South east Asia, Parts of Latin America

31
Q

What conditions cause famine?

A

Oppression
Pestilence
Chaos in economy
War
Pop growth

32
Q

What is the difference between Emigration and Immigration

A

Immigration is moving to a new country

Emigration is leaving your country

33
Q

What effects emigration and immigration

A

depletion of natural resources
droughts
war

34
Q

About how many people in the world have HIV/AIDS?

A

more than 35 million

35
Q

What part of the world has more cases of people with HIV/AIDS than any other part

A

Sub saharan Africa

36
Q

ABout how many people in the US today have HIV/AIDS?

A

about 32k

37
Q

What percent of women in developing countries use birth control in 1960, and how much is it now

A

1960- 12%
2022- 65%

38
Q

What is NPP?
(Net Primary Productivity)

A

The total amount of solar energy converted into biochemical energy without the plants using for themselves

39
Q

What percent of NPP has been used for the purpose of humans

A

27%

40
Q

What percent of the earths surface is being used for agriculture

A

39-50%

41
Q

What percent of the world pop lived in urban areas in the 1850s

A

2% (pop of 10k)

42
Q

what is the urban population in the US currently

A

in 2000, about 75% of the pop

43
Q

what has the growth of urbanization caused?

A

births
immigration
better paying jobs
better education
better health care

44
Q

What does K mean?

A

Carrying capacity for an area

45
Q

What causes K to shrink?

A

degrading the environment

46
Q

What are humans?

A

K selected organisms
-mature slowly
-parental care is involved
-humans live long
logistic growth model (S curve)

47
Q

When does the human pop stabilize?

A

When the carrying capacity of their country is near

LEAPS (3 decks)

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