Saving species and ecosystem services

Which of the following is one of the most important species on earth?

• Cows

• Honeybees

• Pigs

• Birds

As the human population has grown exponentially, the rate of species extinction has also grown.

• False

• True

By the end of the century, how many times higher is the extinction rate expected to grow?

• 100

• 1000

• 10,000

• 100,000

Species that can no longer be found on Earth have suffered what?

• Ecological Extinction

• Selective Removal

• Biological Extinction

• Death by Chocolate

Mass extinction affects only a few species in a relatively short period of geologic time

• False

• True

Geologic records show that the earth has gone through how many mass extinctions?

• 4

• 5

• 6

• 7

After each mass extinction, what happened

• Biodiversity flourished and was higher than before

• The earth never recovered until the next mass extinction.

• The earth went though a period climate correction

• Humans dominated the earth

The natural background extinction rate is

• 1 species lost per year per million years

• 100 species lost per year per million years

• 1 species lost per year per 100,000 years

• 100 species lost per year per 100,000 years

The previous mass extinctions were all driven by mankind

• False

• True

The current extinction rate is

• 100 to 1000 times the background rate

• 50 to 100 times the background rate

• 500 to 1000 times the background rate

• 1000 to 10,000 times the background rate