unit 5

Question 1

to calculate percent of population

Answer 1

divide the unknown by total number

Question 2

define food security

Answer 2

When all people have access to sufficent, safe, and nutritous food at all times

Question 3

two causes of food insecurity

Answer 3

population growth
climate change- areas are experincingf more extreme weather and farms cant move north

Question 4

two benefits of pyramid

Answer 4

reduces livestock while increasing crops, protects pollinating insects because of reuction of pesticides `

Question 5

3 methods to reduce food insecurity

Answer 5

subsistence agriculture in both rural and urban areas. Improving transportation of food, and improving the way food is rationed

Question 6

3 impacts food insecurity has on people

Answer 6

nutritional deficency, poverty, and conflict

Question 7

select a technique and describe how it helps the soil

Answer 7

contour plowing allows for a more effective way to set up the rows of soil. This conserves the soil by keeping it from washing downhill

Question 8

which layer has the highest humus concentration

Answer 8

a (topsoil)

Question 9

advantage/disadvantage of cultavating sandy soil

Answer 9

exclellent drainage; but low water holding capacity

Question 10

advantage/disadvantage of cultavating clayey soil

Answer 10

high water holding capacity; poor drainage

Question 11

two ways in which soil can be damaged by agricultural practices

Answer 11

monocropping causes soil erosion meaning it takes from the soils nutrients. Tillage removes organic matter, leaving the plant exposed

Question 12

what is meant by the term energy security

Answer 12

the reliable availabilty of energy sources at an affordable price with a considedration of enviormental impacts

Question 13

state a non renewable resource

Answer 13

fossile fuels(oil, natural gas, coal

Question 14

how does fossil fuel depletion lead to energy insecurity

Answer 14

fossil fuels are the cheapest form of energy. With their depletion, LIC’s wont have an affordable energy source

Question 15

two reasons why coal oil and gas are so dominant

Answer 15

Easily available resources with collecting infastructure already in place. Energy compaines have a powerful influence

Question 16

long term energy security

Answer 16

the country plans for future growth and change

Question 17

short term energy security

Answer 17

country plans and is ready for a natural disatser

Question 18

benefits of hydroelectric power

Answer 18

increases energy access and production, Dam construction allows for flood control and a stable water supply.

Question 19

advantage/disadvantage of hydroelectric power

Answer 19

a: creation of wetland habitats
d: alters water supply for people downstream

Question 20

3 impacts of energy insecurity on LICs

Answer 20

job loss, economic recession, increased energy prices of distrubition to homes and industries

Question 21

2 causes of energy insecurity

Answer 21

a growing population demands more energy at a faster rate. Heavily relying on one source of energy.

Question 22

why are coal oil and natural gas so dominant

Answer 22

They are cheap and plentiful, and no other source generates as much energy as fossil fuels

Question 23

why are wind farms critisised

Answer 23

noisy and unappealing, they produce alot of ewaste because of the power lines needed to connect them, bats and birds are threatned

Question 24

why do we need alternatives to coal

Answer 24

its depleting rapidly and is hard to transport. Its bad for the enviorment because of the toxins it releases in the atmosphere

Question 25

why are wind farms difficult to place

Answer 25

have to be in windy areas which arent found in urban/developed areas

Question 26

why is burning biomass carbon nuetral

Answer 26

release co2 that plants absorb for growth

Question 27

what are 3 impacts of energy insecurity on LICS

Answer 27

disease, poverty, and conflict

Question 28

renewable enrgy sources

Answer 28

bio fuels, geothermal energy, hydroelectric, wind and solar

Question 29

sources of plastic pollution in the ocean

Answer 29

plastic from landfills ends up in the water stream, ships dumping plastic

Question 30

how does plastic pollution in the ocean affect animals

Answer 30

starvation/misconception of food- Conuming plastic gives a fall sense of nutrioton causing death
strangulation

Question 31

two strategies to reduce ocean plastic

Answer 31

biodegrable plastics
reduse, reuse, recycle

Question 32

waste managment strat to adress plastic

Answer 32

biodegrable plastics use renewable materials, they are safe for food use and require less petroleum.

Question 33

evaluate incineration

Answer 33

reduces waste volume, shrinks landfills, produces energy and ash. Also produces green house gases and toxic chemicals

Question 34

why is e waste increasing

Answer 34

Consumption of products by the population is increasing

Question 35

limitation of data

Answer 35

differnt pricing and income

Question 36

describe the effects of landfills

Answer 36

produces methane, pollutes ground water through leeching, increase of vermin disease, lets off an unplesant smell that disrupts communities.

Question 37

impact of sending waste to other countries

Answer 37

creates a build up of waste for other countries who arent equipped to handle it.