TROPICAL RAINFOREST CASE STUDY: AMAZON

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TROPICAL RAINFOREST CASE STUDY: AMAZON

RAINFOREST, GEOGRAPHY, YEAR 10 GCSE DIAGRAM

EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -49 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: Interdependence of tropical rainforests: Step

• Plants pass on their nutrients when they are eaten by animals. What does the dense

vegetation do?

Answer:

It provides lots of food, so animal populations are high.

Question 2: What % of the world's oxygen comes from rain forests?

Answer:

Over 20%.

Question 3: How many miles of winding rivers are in the Amazon?

Answer:

4,100.

Question 4: Which rainforest is the largest in the world?

Answer:

The Amazon rainforest.Question 5: How much of the world's carbon emission does deforestation contribute to?

Answer:

12-17%.

Question 6: What are agouti (a type of rodent)?

Answer:

One of the only animals who can crack open the hard seed pod of the Brazil nut to eat the nut inside.Sometimes the agouti bury the nuts - these can sprout into new seedlings.

Question 7: How much of the Earth's surface does the Amazon cover?

Answer:

6%.Question 8: Why does the temperature in rainforests hardly vary throughout the yer?

Answer:

Because they are near the equator which has the sun overhead all year round.Question 9: Plant Adaption: Bark -

Answer:

Thick bark isn't necessary as trees aren't exposed to cold temperatures; smooth, thin bark helps water run-off.Question 10: How much rainfall do tropical rainforests receive per year (in mm)?

Answer:

Around 2000mm.

Question 11: How much money did Brazil make from trading cattle in 2008?

Answer:

$6.9 billion.

Question 12: What would happen in the agouti became extinct?

Answer:

The Brazil nut trees would decline and so could all the other animals who live in or feed on the Brazil nut trees.Question 13: Interdependence of tropical rainforests: Step

• What is an example of a knock-on effect of changes to the rainforest ecosystem such as

people reducing tree cover by deforestation?

Answer:

By reducing the amount of CO?, being absorbed from the atmosphere, adding to the greenhouse effect and changing the climate.Question 14: Interdependence of tropical rainforests: Step

• What do trees do?

Answer:

They intercept and take up lots of water, and release it back into the atmosphere, providing moisture for further rainfall.

Question 15: What does interdependence mean?

Answer:

That all the different parts of an ecosystem depend on one another.Question 16: Define biotic factors:

Answer:

The living factors within a ecosystem.

Question 17: What is the function of buttress roots?

Answer:

They stop the trees from toppling over and allow the trees to absorb water on top of the soil.

Question 18: What % of South America is made up of the Amazon?

Answer:

Around 40%.

Question 19: What percentage of the Earth's biodiversity comes from rainforests?

Answer:

Over 50%.Question 20: Interdependence of tropical rainforests: Step

• What does climate change mean?

Answer:

That the climate may change so the risk of drought increases which will affect the plants and animals that live in the ecosystem.

Question 21: How many indigenous groups live in the Amazon?

Answer:

Over 350.

Question 22: Example of abiotic factors

Answer:

soil, water Question 23: Interdependence of tropical rainforests: Step 1.b) What does the quick decomposition of dead plant material mean?

Answer:

That the surface soil is high in nutrients so plants can grow quickly and easily.Question 24: What % of global deforestation was Brazil and Indonesia accountable for between 2001 and 2014?

Answer:

95%.

Question 25: How many countries does the Amazon rainforest span across?

Answer:

9.Question 26: What adaption do trees in tropical rainsforests (which can be up to 30m high) have?

Answer:

They have buttress roots which are wide and run along the surface of the soil.