Monarch butterfly populations decline by 86 percent in a year

Monarch butterfly populations decline by 86 percent in a year

Assessment

Interactive Video

Science, Biology

11th Grade - University

Hard

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The transcript discusses the significant decline in monarch butterfly populations in California, highlighting a drop from 148,000 in 2017 to 20,456 in a year. Research indicates a 72% risk of extinction in 20 years due to factors like habitat loss, pesticide use, and climate change. Rising carbon dioxide levels may contaminate milkweed, the monarch caterpillar's sole food source, while increasing temperatures could alter migration routes and affect breeding areas.

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5 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What was the population of overwintering monarch butterflies in California in 2017?

148,000

20,456

200,000

72,000

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the estimated risk of monarch butterflies becoming extinct in 20 years?

72%

60%

50%

80%

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is NOT a factor contributing to the decline in monarch butterfly populations?

Pesticide use

Climate change

Habitat loss

Increased predation

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What plant is the sole food source for monarch caterpillars?

Rose

Dandelion

Milkweed

Sunflower

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How might increasing temperatures affect monarch butterflies?

Change their color

Increase their size

Alter their migration route

Shorten their lifespan