Unit 5 Quiz

Question 1

Old-growth forests

Answer 1

Uncut, not disturb for several years

Question 2

Second-growth forests

Answer 2

Secondary ecological succession, less species diversity than old-growth

Question 3

Tree plantation

Answer 3

May supply most of industrial wood in the future, management of these is called silviculture

Question 4

Selective cutting

Answer 4

Picking which trees you actually want to cut

Question 5

Clear-cutting

Answer 5

All trees in an area are removed

Question 6

Strip cutting

Answer 6

Clear-cutting in strips

Question 7

Surface fires

Answer 7

Usually burn leaf litter and undergrowth, provide benefits

Question 8

Crown fires

Answer 8

Extremely hot, spreads quickly, kills wildlife, increases soil erosion

Question 9

Ground fires

Answer 9

Smoldering fires and blogs or swamps, can burn underground for days or weeks

Question 10

Environmental effects of overgrazing

Answer 10

• Reduces grass cover
• Leads to a erosion of soil by water and wind
• Soil becomes is compacted
• Enhances invasion of plant species that cattle won’t eat
• May lead to tragedy of the commons

Question 11

______ has the highest deforestation rate

Answer 11

Africa

Question 12

Deforestation causes

Answer 12

Population growth, subsistence farmers poverty, ranging, lumber, plantation farms

Question 13

Uses for wood

Answer 13

Building houses, making fires, heating, cooking etc