How fast do plates move relative to one another?

A) centimeters per year
B) meters per year
C) kilometers per year
D) one hundred kilometers per year

What is a popular model for the formation of an atoll?

A) a moderate-sized meteoroid forms a circular crater on the seafloor
B) a volcanic eruption forms a large circular caldera
C) a volcanic island forms and subsides
D) a barrier reef becomes buried by volcanic eruptions

Which letter in the diagram corresponds to the first zone where there isn't enough sunlight penetrating to allow photosynthesis to occur?

Which of the following are NOT associated with a hurricane?

A) strong winds and heavy rainfall
B) a mound of water storm surge) pushed ahead of the storm
C) high atmospheric pressure
D) a relatively calm area in the center of the storm
E) all of these are associated with a hurricane

Since 1945,about 1000 insect species have become genetically resistant to one or more widely used pesticides.

Which of the following is NOT likely to be a consequence of climate change?

A) changes in ocean currents
B) some regions getting warmer, others colder
C) increased stability in temperatures
D) changes in the distribution of plants and animals