Page 1 of 71
Ducks Unlimited Ecology Conservation &
Management Certification Exam NEWEST 300
QUESTIONS AND VERIFIED SOLUTIONS
LATEST UPDATE THIS YEAR
Which of the following acts encouraged settlers to move west and provided free acreage to
those who made the journey?
Homestead act
Manifest destiny act
Organic act
Weeks act
homestead act
Experts estimate around ____ million acres of tree-covered land is considered in risk of
mortality.
121
125
81
96
81
1
, Page 2 of 71
Rainforests cover which percentage of the earth?
24
Three
10
Six
six
Latitude range for the following:
Tropical
Boreal
Temperate
mid latitudes
far north latitudes
between mid and polar latitudes
Which of the following invasive species cause soil erosion, destroy young trees and consume
seeds and nuts necessary for new growth?
Cats
Cottontail rabbits
Feral hogs
Earthworms
feral hogs
2
, Page 3 of 71
forest layers in order from bottom to top
forest floor
herb layer
shrub layer
understory layer
canopy
When topsoil is lost, the loss is fairly permanent because the process to create just three
centimeters of topsoil takes about 1,000 years.
True
False
true
services grasslands provide
important habitat for wildlife
carbon storage
filters precipitation runoff
builds deep and rich soil
Which of the following is NOT a main threat which plagues grasslands today?
Urbanization
Climate change
3
, Page 4 of 71
Lasting effects from Dust Bowl
Unsustainable agriculture
lasting effects from the dust bowl
Why do temperate grasslands have the most fertile soil on earth?
-Trees require substantial amounts of nutrients to grow, so the lack of trees in grassland
areas allows for more fertile soil
-Temperate grasslands receive the most rainfall compared to other grasslands
-Grasslands have the least number of invasive species who absorb nutrients from the soil
-Grass roots decaying below the surface enriches the soil with nutrients
Grass roots decaying below the surface enriches the soil with nutrients
Where are savannas typically found?
Africa, Australia and South America
Higher altitudes
South of the Tropic of Capricorn
Europe and North America
Africa, Australia and South America
Which of the following does NOT influence an organism's niche?
Mutualism
Competition with other species
4
Ducks Unlimited Ecology Conservation &
Management Certification Exam NEWEST 300
QUESTIONS AND VERIFIED SOLUTIONS
LATEST UPDATE THIS YEAR
Which of the following acts encouraged settlers to move west and provided free acreage to
those who made the journey?
Homestead act
Manifest destiny act
Organic act
Weeks act
homestead act
Experts estimate around ____ million acres of tree-covered land is considered in risk of
mortality.
121
125
81
96
81
1
, Page 2 of 71
Rainforests cover which percentage of the earth?
24
Three
10
Six
six
Latitude range for the following:
Tropical
Boreal
Temperate
mid latitudes
far north latitudes
between mid and polar latitudes
Which of the following invasive species cause soil erosion, destroy young trees and consume
seeds and nuts necessary for new growth?
Cats
Cottontail rabbits
Feral hogs
Earthworms
feral hogs
2
, Page 3 of 71
forest layers in order from bottom to top
forest floor
herb layer
shrub layer
understory layer
canopy
When topsoil is lost, the loss is fairly permanent because the process to create just three
centimeters of topsoil takes about 1,000 years.
True
False
true
services grasslands provide
important habitat for wildlife
carbon storage
filters precipitation runoff
builds deep and rich soil
Which of the following is NOT a main threat which plagues grasslands today?
Urbanization
Climate change
3
, Page 4 of 71
Lasting effects from Dust Bowl
Unsustainable agriculture
lasting effects from the dust bowl
Why do temperate grasslands have the most fertile soil on earth?
-Trees require substantial amounts of nutrients to grow, so the lack of trees in grassland
areas allows for more fertile soil
-Temperate grasslands receive the most rainfall compared to other grasslands
-Grasslands have the least number of invasive species who absorb nutrients from the soil
-Grass roots decaying below the surface enriches the soil with nutrients
Grass roots decaying below the surface enriches the soil with nutrients
Where are savannas typically found?
Africa, Australia and South America
Higher altitudes
South of the Tropic of Capricorn
Europe and North America
Africa, Australia and South America
Which of the following does NOT influence an organism's niche?
Mutualism
Competition with other species
4
