WorksheetsConservation and Management Biodiversity
Total questions: 21
Worksheet time: 11mins
What is the estimated number of plant and animal species in Costa Rica?
750,000
200,000
500,000
1,000,000
What percentage of Costa Rica's land is included in the system of reserves?
25%
30%
15%
10%
What method does the Costa Rican government use to encourage landowners to conserve land?
Paying landowners
Subsidies for logging
Tax breaks
Forced conservation
What are the economic services provided by forests?
All of the above
Mining
Grazing
Carbon dioxide storage
What type of fire usually burns undergrowth and leaf litter in forests?
Wildfire
Surface fire
Crown fire
Controlled fire
What is the main negative impact of deforestation?
Increased flooding
Local extinction of specialist species
Erosion
All of the above
What percentage of mature tropical forests have been lost since 1950?
90%
50%
25%
75%
What are the main causes of tropical deforestation in South America?
Cattle grazing and crop land
Oil palm plantations
Firewood and farming
All of the above
What is the main impact of overgrazing on grasslands?
Reduces grass cover
All of the above
Harms grass roots
Causes soil erosion
What is the main challenge faced by U.S. National Parks?
Popularity
Overgrazing
Habitat loss
Invasive species
What percentage of Earth's land is strictly protected from potentially harmful human activity?
6%
2%
8%
4%
What is the main threat to marine biodiversity caused by overfishing?
Trawling
Loss of keystone species
Ocean acidification
Dead zones
What is the main cause of ocean acidification?
Overfishing
Increase in atmospheric CO2
Dredging
Industrial pollution
What is the main impact of pollution from excess soil nutrients in oceans?
Overfishing
Trawling
Dead zones
Ocean acidification
What is the main challenge in protecting marine ecosystems?
Tragedy of the commons
Lack of marine reserves
Invisible ocean damage
Inexhaustible ocean resource
What is the main cause of soil erosion in grasslands?
Overgrazing
Deforestation
Industrial pollution
Urbanization
What percentage of the world's forests are currently protected?
12%
30%
5%
20%
What is the main threat to biodiversity in marine ecosystems?
Overfishing
Climate change
Pollution
All of the above
What is the main cause of desertification?
Deforestation
Overgrazing
Climate change
All of the above
What percentage of the world's wetlands have been lost since 1900?
50%
25%
75%
90%
What is the main threat to biodiversity in freshwater ecosystems?
Pollution
Climate change
Overfishing
All of the above
