WATER RESTORATION UPDATED EXAM 4
PRACTICE TEST 2026 FULL SOLUTIONS
REVIEW PACK
◉ What percentage of global forests are tropical, boreal, temperate,
and subtropical?
Answer: Tropical ~45%, Boreal ~27%, Temperate ~16%,
Subtropical ~11%
◉ Where are boreal forests located?
Answer: Northern Hemisphere (Canada, Russia), cold climates,
coniferous trees
◉ Where are tropical forests located?
Answer: Near the equator, warm and wet, highest biodiversity
◉ What is the global trend in forest change?
Answer: Tropical forests are being deforested, temperate forests are
regrowing (reforestation)
◉ What is forest succession?
, Answer: The gradual change in species composition from early
species to mature forest over time
◉ What are the four steps of forest regeneration?
Answer: Pollination → Seed dispersal → Germination → Growth to
maturity
◉ Which steps of forest regeneration are usually NOT limiting?
Answer: Pollination and seed dispersal
◉ Which steps ARE limiting in forest regeneration?
Answer: Germination and growth
◉ Why is sunlight important in forest regeneration?
Answer: Many seeds require sunlight to germinate
◉ What is browsing pressure?
Answer: Animals (like deer) eating seedlings and preventing forest
regrowth
◉ What is passive forest regeneration?
Answer: Natural regrowth without human intervention; cheap but
slow (30-50 years)
PRACTICE TEST 2026 FULL SOLUTIONS
REVIEW PACK
◉ What percentage of global forests are tropical, boreal, temperate,
and subtropical?
Answer: Tropical ~45%, Boreal ~27%, Temperate ~16%,
Subtropical ~11%
◉ Where are boreal forests located?
Answer: Northern Hemisphere (Canada, Russia), cold climates,
coniferous trees
◉ Where are tropical forests located?
Answer: Near the equator, warm and wet, highest biodiversity
◉ What is the global trend in forest change?
Answer: Tropical forests are being deforested, temperate forests are
regrowing (reforestation)
◉ What is forest succession?
, Answer: The gradual change in species composition from early
species to mature forest over time
◉ What are the four steps of forest regeneration?
Answer: Pollination → Seed dispersal → Germination → Growth to
maturity
◉ Which steps of forest regeneration are usually NOT limiting?
Answer: Pollination and seed dispersal
◉ Which steps ARE limiting in forest regeneration?
Answer: Germination and growth
◉ Why is sunlight important in forest regeneration?
Answer: Many seeds require sunlight to germinate
◉ What is browsing pressure?
Answer: Animals (like deer) eating seedlings and preventing forest
regrowth
◉ What is passive forest regeneration?
Answer: Natural regrowth without human intervention; cheap but
slow (30-50 years)
