Semester 2 Final Exam [EXTRA CREDIT]

Why might a species go extinct?

• Their food source INCREASES

• Their food source DECREASES

• Their food source DOES NOT CHANGE

What is the best control method for LAKE TROUT IN YELLOWSTONE LAKE?

• Eliminate the lake trout entirely by destroying all fish life, and then reintroduce the cutthroat. This would cost between $32 and $181 million.

• Gillnet some, but not all, the lake trout to reduce costs.

• Leave the lake trout alone and see what happens.

• Recruit thousands of anglers to catch lake trout.

Which of the following ecosystems has the most biodiversity?

• 
• 
• 

How are levels of freshwater available going to change from the year 1995 to the year 2025?

• Levels of freshwater are going to INCREASE due the the increase in human population.

• Levels of freshwater are going to DECREASE due the the increase in human population.

• Levels of freshwater are NOT GOING TO CHANGE due the the increase in human population.

What are Human activities, such as development, burning fossil fuels, poaching, and pollution, going to do to many species?

• They can cause damage or destroy the natural habitats of many species, which can also cause them to REPRODUCE MORE

• They can cause damage or destroy the natural habitats of many species, which can also cause them to DIE OUT

What is going to happen to the amount of trash being produced between now and the year 2025?

• People generate trash and more people means MORE trash.

• People generate trash and more people means LESS trash.

What is the key difference between renewable and nonrenewable resources?

• The supply of nonrenewable resources are unlimited

• The supply of nonrenewable resources are fixed

Which layer is the oldest layer in this profile?

• A

• B

• C

What are the relative age of these two rocks?

• A is older than A.

• B is older than B.

• A is older than B.

• B is older than A.

What conclusion might a scientist make about the environment of the fossils pictured below?

• The environment where these fossils

  once lived was in space.

• The environment where these fossils

  once lived was in a volcano.

• The environment where these fossils

  once lived was underwater.

• The environment where these fossils

  once lived was on land.