Expansion and Extinction of Species

Expansion and Extinction of Species

Multiple Choice

How can climate change lead to an expansion of a species?

• climate change has no effect on the expansion

• Climate change is opening up new habitats to species as temperatures rise

• climate change can result in the decline of a species

Multiple Choice

Over time the grizzly bear and polar bear could create a new species.

• true

• false

Multiple Select

The Great plains has changed over the years as a result of? Check all that apply.

• wildfires being put out

• rivers widening

• bison no longer grazing

Multiple Choice

What is one possible way the barred owl was able to cross the Great Plains?

• flew all the way across

• stopped periodically in the tall grass

• used trees planted along rivers

Multiple Select

The northern spotted owl population is at risk due to which of the following? Check all that apply.

• barred owl coming into territory

• logging

• re-establishment of forest

• land development

Multiple Select

Barred owls and northern spotted owls use old-growth forests for food and nesting. Which of the following characteristics of the barred owl would give it a competitive advantage over the northern spotted owl? Select 4 correct answers.

• larger body

• aggressive behavior

• ability to roost in trees

• better breeding success

• ability to eat a wide range of prey

Multiple Choice

What evidence supports the idea that extinctions have occurred throughout history?

• rock formations

• large crater impact

• climate change

• fossil record

Look carefully over the population trend for the spotted owl and barred owl on the next slide.

Multiple Choice

Which of the following is not a factor that causes background extinction?

• slight change in Earth's nitrogen levels

• loss of habitat

• disease

• loss of competitive advantage

Open Ended

What is the difference between background extinction and mass extinction?