5.20 Summ. ES

By the end of the century, how many degrees Fahrenheit is the temperature on Earth expected to increase, on average?

• 10

• 20

• 5

• 15

What year did scientists begin recording the average temperature on Earth?

• 1884

• 1984

• 1894

• 1888

What year did scientists begin monitoring sea ice via satellite?

• 1979

• 1999

• 1888

• 1784

As the temperature on Earth increases, how are precipitation and droughts affected? Be specific; explain in 3 to 10 sentences.

If average global temperatures reach their projected levels in 2100, between ​ (a)   and ​ (b)   percent of animals and plants are at risk of extinction.

• 20
• 30
• 10
• 40

As the temperature on Earth rises, how do animals move in response? Summarize in 2-5 sentences.

As the temperature on Earth rises, how are animals and plants impacted, other than physical movement? Briefly mention three ways they are impacted, and give a specific example. Summarize in 3-10 sentences.

For animals moving to new locations, what problems might they face? Select all that apply.

• Competition

• Disease

• Inability to return to former habitat

• Predation

• Unpredictable interactions with new species

What organisms benefit from warming temperatures? Select all that apply.

• Animals

• Bacteria

• Mosquitoes

• Plants

• Viruses

​ (a)   areas on Earth are warming the fastest.​ (b)   areas are warming as well, but at a slower rate.

• polar
• tropical
• temperate
• subtropical