What is the most common way in which sinkholes form?

A) a small explosion of methane gas from coal beds
B) a small explosion of CO₂ gas from dissolving limestone
C) a rising dome of salt finally reaches the surface
D) the roof of a cave collapses

Where do most deserts and other arid lands occur:

A) along the equator
B) near the poles
C) in the Southern Hemisphere
D) in the subtropics

Which of the following is true about processes that affect Earth?

A) Atmospheric pressure is less at sea level than in high mountains.
B) Forces decrease downward within Earth.
C) Forces are imposed on deep rocks from all directions.
D) All heat inside Earth comes from magma.
E) None of these.

Where is the Sackville Waterfowl Park located? 

A)  in New Brunswick 
B)  in Nova Scotia 
C)  in Ontario 
D)  in Prince Edward Island

A(n)____________________ is the boundary between an advancing warm air mass and the cooler one it is replacing.

Which statement is a general description of a K-selected species? 

A)  It is more responsive to environmental changes than an r-selected species. 
B)  It has high genetic diversity. 
C)  It is generally less adaptable to change than an r-selected species. 
D)  It exhibits a fast rate of evolution.

Most earthquakes occur along:

A) plate boundaries
B) continental margins
C) major rivers
D) lines parallel with Earth's magnetic field

Which measure is urged by scientists,who claim the global climate system is so complex that society will never have the level of certainty wanted by decision makers? 

A)  Take no action until more data are obtained. 
B)  Take action now, based on the precautionary principle. 
C)  Continue monitoring the data. 
D)  Take no action now because global warming is all hyperbole.

Which approach would be the most effective in deterring crop damage due to insects? 

A)  planting barrier hedges around agricultural fields 
B)  crop rotation 
C)  delay planting 
D)  planting monocultures

What are some effects of building a dam?

A) a stream has more sediment below the dam and so can erode more efficiently
B) the reservoir lake) traps sediment that over time fills up part of the reservoir
C) a dam, whether constructed by nature or by humans, represents a permanent change in base level
D) the stream erodes into the land instead of depositing sediment, where it enters the reservoir