Brown Tree Snake

Open Ended

Who worked on this assignment?

​Read the
following passage
to help you answer
the questions

Multiple Choice

Why was the word invasive used?

• It became the largest snake on the island

• It was not supposed to be there and caused damage to other species

• It was not supposed to be there, but helped other species grow

• It invaded the homes of people on the island

Multiple Choice

How did the snake get to Guam?

• It already lived there

• People released their pets

• It hitched a ride on a cargo ship

• It swam

Multiple Choice

How could the introduction of a new species affect the local food web?

• It will eat the food the the native snakes usually eat

• It will help increase biodiversity

• It will breed with native snakes and make a new species

​Read these graphs on the next few slides carefully

Open Ended

Do you think all bird species are equally at risk for decline?

Multiple Choice

What characteristics would increase the birds chance at decline?

• Spend a lot of time in trees

• Spend a lot of time on the ground

• Can fly really fast

• Larger-sized bird

Multiple Choice

What conclusion can you draw from the impact of the brown tree snake on bird populations in Guam?

• It caused increases in many bird populations and biodiversity increased

• It caused increases in many bird populations and biodiversity decreased

• It caused decline in many bird populations and biodiversity increased

• It caused decline in many bird populations and biodiversity decreased

Multiple Choice

The brown tree snake is native in areas such as Australia and Indonesia. In those ecosystems, the brown tree snake is not causing the decline of bird species or tree populations. So what makes this same species so damaging in Guam?

• Smarter and faster

• No natural predators

• Eats a variety of food

• Birds are smaller in Guam

Multiple Choice

Which of the following was NOT an affect of the invasive brown tree snake in Guam?

• Decreased biodiversity

• Attacked children and pets

• Increased Biodiversity

• Caused extinction of many bird species

Multiple Choice

What do invasive species do in a new area?

• breed with existing species

• "take over" the area and edge out the new species

• die because they cannot survive

• get in balance with the existing food web

Open Ended

Research about an invasive species in FLORIDA. Write two sentences about it below