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IUCN Categories & Criterias

Authored by NUR ABDULLAH

Biology

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IUCN Categories & Criterias
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5 questions

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1.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Species Name: Forest Frog (Hypothetica silvatica)
Habitat: Tropical rainforests
Population Trend: Declining
Geographic Range:

  • EOO: 1,000 km²

  • AOO: 50 km²
    Threats:

  • Habitat loss due to logging

  • Water pollution from agricultural runoff
    Notes:

  • Population size estimated at 500 mature individuals.

  • Restricted to fragmented forest patches.

EN

VU

CR

EX

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Species Name: Sandbloom Cactus (Floribundus aridus)
Habitat: Arid deserts
Population Trend: Stable
Geographic Range:

  • EOO: 250 km²

  • AOO: 20 km²
    Threats:

  • Illegal collection for ornamental trade

  • Limited rainfall due to climate change
    Notes:

  • Population size: 1,200 mature individuals.

  • Found in only 5 known locations.

VU

CR

LC

EN

3.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Species: Savannah Wildflower (Euphorbia savannae)

  • Population trend: Stable.

  • Geographic range: EOO = 20,000 km²; AOO = 2500 km².

  • Threats: Encroachment by invasive plant species.

  • Number of mature individuals: 20,000.

EN

CR

LC

VU

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Arctic Sea Star (Astropecten glacialis)

  • Population trend: Declining by 20% over the past decade.

  • Geographic range: EOO = 30,000 km²; AOO = 5,000 km².

  • Threats: Ocean warming, pollution.

  • Number of locations: 15.

CR

NT

LC

VU

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Wetland Reed Snake (Natrix palustris)

  • Population trend: Declining by 70% in the last 3 generations.

  • Geographic range: EOO = 2,800 km²; AOO = 400 km².

  • Threats: Draining of wetlands, road construction.

  • Number of mature individuals: Fewer than 500.

VU

EN

CR

LC

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