PrepTest 85, Section 2, Question 18
In grasslands near the Namib Desert there are "fairy circles"—large, circular patches that are entirely devoid of vegetation. Since sand termite colonies were found in every fairy circle they investigated, scientists hypothesize that it is the burrowing activities of these termites that cause the circles to form.
In grasslands near the Namib Desert there are "fairy circles"—large, circular patches that are entirely devoid of vegetation. Since sand termite colonies were found in every fairy circle they investigated, scientists hypothesize that it is the burrowing activities of these termites that cause the circles to form.
In grasslands near the Namib Desert there are "fairy circles"—large, circular patches that are entirely devoid of vegetation. Since sand termite colonies were found in every fairy circle they investigated, scientists hypothesize that it is the burrowing activities of these termites that cause the circles to form.
In grasslands near the Namib Desert there are "fairy circles"—large, circular patches that are entirely devoid of vegetation. Since sand termite colonies were found in every fairy circle they investigated, scientists hypothesize that it is the burrowing activities of these termites that cause the circles to form.
Which one of the following, if true, most supports the scientists' hypothesis?
Dying grass plants within newly forming fairy circles are damaged only at the roots.
The grasses that grow around fairy circles are able to survive even the harshest and most prolonged droughts in the region.
The soil in fairy circles typically has higher water content than the soil in areas immediately outside the circles.
Fairy circles tend to form in areas that already have numerous other fairy circles.
Species of animals that feed on sand termites are often found living near fairy circles.
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