the amazon rainforest

Question 1

how many different countries is the rainforest spread over `

Answer 1

4

Question 2

where is the rainforest located in relation to the equator

Answer 2

10 degrees north and south

Question 3

whats the temperature like

Answer 3

high temperatures due to a thin atmosphere

Question 4

what occurs in hadley cells

Answer 4

warmer air rises and condenses creating heavy rainfall

Question 5

how much carbon does the amazon hold

Answer 5

80-120 billion tonnes

Question 6

what does deforestation do

Answer 6

releases carbon into the atmosphere
- new trees live faster and die younger
- surge of trees dying in the amazon

Question 7

how is the water in the amazon in a closed system loop

Answer 7

48% of rain in the amazon comes from evapouration

Question 8

whats the average rainfall

Answer 8

2300mm

Question 9

how much rain reaches atlantic from the amazon

Answer 9

30%

Question 10

how much of the forest has been lost due to burning

Answer 10

59%

Question 11

what does the slash and burn technique cause in the amazon

Answer 11

• reduce retention of humidity in the soil top layer
• reduces porosity of soil so faster rainfall- erosion increased
• increases reflectiveness
• forests emit salts and organic fibres and act as condensation nuclei to assist cloud and rain formation (loss inhibits this)

Question 12

what temperature is change is expected by 2050

Answer 12

2-3 degrees

Question 13

what does deforestation do to rainfall patterns

Answer 13

changes them possibly causing it to become a dry savannah in the future

Question 14

what mitigation is taking place in the amazon

Answer 14

• reforestation efforts
• creation of national parks (15 million hectares
• government aim to reduce deforestation by 80%

Question 15

how much carbon does natural soil hold

Answer 15

4-9kg

Question 16

how much carbon does pasturised soil contain

Answer 16

1-2kg

Question 17

what does heavy rainfall do to the soil

Answer 17

• removes topsoil and drains it into rivers
• causes weathering to lower layers

Question 18

what are the main causes of vegetation change

Answer 18

• cattle ranching
• oil and gas extraction
• logging

Question 19

what natural causes increase risk of forest fires`

Answer 19

droughts

Question 20

what does change in precipitation cause for rivers

Answer 20

• reduction of river discharge
• ## destroy freshwater ecosystems

Question 21

what could rising temperatures cause for rivers

Answer 21

change of biodiversity of river systems introducing new species once killing others