What is the estimated number of plant and animal species in Costa Rica?

• 750,000

• 200,000

• 500,000

• 1,000,000

Answer explanation

The estimated number of plant and animal species in Costa Rica is 500,000, which is the correct choice.

Tags

NGSS.HS-LS2-2

NGSS.HS-LS4-5

What percentage of Costa Rica's land is included in the system of reserves?

• 25%

• 30%

• 15%

• 10%

Answer explanation

25% of Costa Rica's land is included in the system of reserves. This is the correct choice.

What method does the Costa Rican government use to encourage landowners to conserve land?

• Paying landowners

• Subsidies for logging

• Tax breaks

• Forced conservation

Answer explanation

The Costa Rican government encourages landowners to conserve land by paying them.

Tags

NGSS.HS-ETS1-3

NGSS.HS-LS2-7

What are the economic services provided by forests?

• All of the above

• Mining

• Grazing

• Carbon dioxide storage

Answer explanation

Forests provide economic services such as mining, grazing, carbon dioxide storage, and more. However, the correct choice is 'All of the above' as it encompasses all the mentioned services.

What type of fire usually burns undergrowth and leaf litter in forests?

• Wildfire

• Surface fire

• Crown fire

• Controlled fire

Answer explanation

Surface fire is the type of fire that usually burns undergrowth and leaf litter in forests.

What is the main negative impact of deforestation?

• Increased flooding

• Local extinction of specialist species

• Erosion

• All of the above

Answer explanation

Deforestation has multiple negative impacts including increased flooding, local extinction of specialist species, and erosion. Therefore, the correct answer is 'All of the above'.

Tags

NGSS.HS-LS2-7

NGSS.HS-LS4-5

What percentage of mature tropical forests have been lost since 1950?

• 90%

• 50%

• 25%

• 75%

Answer explanation

Approximately 50% of mature tropical forests have been lost since 1950. This significant loss highlights the urgent need for conservation efforts to protect these valuable ecosystems.

Tags

NGSS.HS-LS2-6

NGSS.HS-LS2-7

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

Answer explanation

The main causes of tropical deforestation in South America are cattle grazing and crop land. These activities contribute to the destruction of forests in the region.

Tags

NGSS.HS-ESS3-4

NGSS.HS-LS2-7

What is the main impact of overgrazing on grasslands?

• Reduces grass cover

• All of the above

• Harms grass roots

• Causes soil erosion

Answer explanation

Overgrazing has multiple negative impacts on grasslands, including reducing grass cover, harming grass roots, and causing soil erosion. All of these effects can lead to the degradation of grasslands.

Tags

NGSS.HS-LS2-2

What is the main challenge faced by U.S. National Parks?

• Popularity

• Overgrazing

• Habitat loss

• Invasive species

Answer explanation

The main challenge faced by U.S. National Parks is popularity. The high number of visitors puts strain on the park's resources and infrastructure.

Tags

NGSS.HS-ESS3-4

NGSS.HS-LS2-7