1. Sumatra is the fourth most densely populated island in the world. The population of Sumatra was approximately 20 million in 1978 and by the year 2010, it had increased to approximately 50 million. Sumatra is a tropical island that has a wide range of plant and animal species. Almost 50 percent of its tropical rainforest, habitat for many endangered species, has been lost in the past 35 years. Forests are felled and burned in order to create agricultural land. One of the most critically endangered species is the Sumatran tiger. The estimated popu- lation of tigers was about 1,000 in 1978, but has shrunk to approxi- mately 400. (a) The map shows the historical range and the current range of the Sumatran tiger. (i) Identify and discuss THREE possible causes of the decline thro of the Sumatran tiger. (ii) Describe TWO characteristics of the Sumatran tiger that would make their populations slow to recover. (iii) Discuss ONE economic or ecological reason for protecting the tiger Thailand Sumatra Malaysia Key Java Historical range Current range Bali

Applications and Investigations in Earth Science (9th Edition)
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Answer Part A: sub parts 1-3
AP®
Free-Response Practice
1. Sumatra is the fourth most densely populated island in the world. The
population of Sumatra was approximately 20 million in 1978 and by
the year 2010, it had increased to approximately 50 million.
Sumatra is a tropical island that has a wide range of plant and
animal species. Almost 50 percent of its tropical rainforest, habitat for
many endangered species, has been lost in the past 35 years. Forests are
felled and burned in order to create agricultural land. One of the most
critically endangered species is the Sumatran tiger. The estimated popu-
lation of tigers was about 1,000 in 1978, but has shrunk to approxi-
mately 400.
(a) The map shows the historical range and the current range of the
Sumatran tiger.
1320201
adaboga in S
(i) Identify and discuss THREE possible causes of the decline
of the Sumatran tiger.
Thailand
(ii) Describe TWO characteristics of the Sumatran tiger that
would make their populations slow to recover.
phi (iii) Discuss ONE economic or ecological reason for protecting
the tiger.
slay
Sumatra
Key
Malaysia C
Java
Historical
range
(i) Describe TWO economic benefits that biodiversity provides.
(002,28) 380,181
(ii) Describe ONE ecological benefit that biodiversity provides.
(38E 201 E) 200.222.2
(iii) Describe ONE program or strategy that works to protect an endangered species. 1) 11
ronat.
Practice appears on page TE16.
Current
range
Bali
(iv) Identify and discuss ONE economic, cultural, or social factor that might make it difficult to implement a
program in Sumatra to protect the Sumatran tiger. (2005)
(2011M sisup2) sismol
(b) Measuring the biodiversity of an ecosystem is key in determining the health of that ecosystem.
Transcribed Image Text:AP® Free-Response Practice 1. Sumatra is the fourth most densely populated island in the world. The population of Sumatra was approximately 20 million in 1978 and by the year 2010, it had increased to approximately 50 million. Sumatra is a tropical island that has a wide range of plant and animal species. Almost 50 percent of its tropical rainforest, habitat for many endangered species, has been lost in the past 35 years. Forests are felled and burned in order to create agricultural land. One of the most critically endangered species is the Sumatran tiger. The estimated popu- lation of tigers was about 1,000 in 1978, but has shrunk to approxi- mately 400. (a) The map shows the historical range and the current range of the Sumatran tiger. 1320201 adaboga in S (i) Identify and discuss THREE possible causes of the decline of the Sumatran tiger. Thailand (ii) Describe TWO characteristics of the Sumatran tiger that would make their populations slow to recover. phi (iii) Discuss ONE economic or ecological reason for protecting the tiger. slay Sumatra Key Malaysia C Java Historical range (i) Describe TWO economic benefits that biodiversity provides. (002,28) 380,181 (ii) Describe ONE ecological benefit that biodiversity provides. (38E 201 E) 200.222.2 (iii) Describe ONE program or strategy that works to protect an endangered species. 1) 11 ronat. Practice appears on page TE16. Current range Bali (iv) Identify and discuss ONE economic, cultural, or social factor that might make it difficult to implement a program in Sumatra to protect the Sumatran tiger. (2005) (2011M sisup2) sismol (b) Measuring the biodiversity of an ecosystem is key in determining the health of that ecosystem.
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