Columnar joints, which contain roughly hexagonal columns of basalt, form when lava flow cools.
a. true
b. false
Answer: a. true
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Which of the following conditions is BEST for the formation of radiation fog?
A. clear summer night with a strong breeze B. clear winter night with a slight breeze C. cloudy summer night with a slight breeze D. cloudy winter night with a strong breeze
Invasive species typically have rapidly increasing population sizes because
A. they have very effective mechanisms for dispersal. B. they can live in a variety of habitats. C. they have few predators or diseases in their new location. D. All of the above are correct. E. None of the above is correct.
Discuss ways to control invasive species
What will be an ideal response?
Which of the following questions must be answered in order to identify a functional region?
1. What specific characteristic defines a region? 2. What general characteristics define the area's identity? 3. What do people call the region? 4. What languages are spoken in the area? 5. What area is influenced by a node?