Y10 Living World

Question 1

Define the term ecosystem

Answer 1

The living and non-living components of an environment and the inter-relationships that exist between them.

Question 2

True or false: Hot deserts are found in areas of low pressure

Answer 2

True

Question 3

Explain what happens to air in areas of high pressure

Answer 3

Cool air sinks

Question 4

Name a decomposer in a sand dune ecosystem

Answer 4

Sand bowl snail
Bacteria
Fungi

Question 5

Name 1 cause of deforestation

Answer 5

Cattle ranching
Agriculture
Mineral extraction
Logging
HEP

Question 6

Identify 1 economic impact of deforestation

Answer 6

Saving electricity costs: Belo Monte Dam projected to cost $18.5billion but will save $19 billion per year in electricity costs in Brazil.
Income: Brazil is the world’s largest exporter of soya, beef & sugar – agriculture in the Amazon is very profitable for the economy.
The Carajas mine employs 20,000 people and has an annual revenue of $2.8 billion

Question 7

Name 1 way the TRF is sustainably managed

Answer 7

Selective logging
Replanting
Conservation & education
Eco-tourism
International agreements
Debt reduction

Question 8

What is the hot desert climate like?

Answer 8

Less than 250mm rainfall
Temperatures up to 50 degrees Celcius in the day and below 0 at night

Question 9

Identify 1 way a camel is adapted to the HD

Answer 9

Camels have very long eyelashes and nostrils that close, ears have hair inside and out to ensure no sand gets blown into them.

Can drink up to 46 litres of water within one drinking session as water sources are rare in the HD.

Camels have very wide feet to keep them stable in the sandy soils.

Question 10

What is your case study for hot desert opportunities?

Answer 10

Mojave, USA