What do urea-formaldehyde foam insulation (UFFI), lead-based paint, and asbestos have in common?
a. they all pose a risk to humans because they may emit harmful gases
b. they all were banned in 1978
c. all three were used in insulating materials
d. they were all used at one time in residential construction
Answer: d. they were all used at one time in residential construction
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North America
A. has large numbers of indigenous people B. was settled exclusively by Europeans C. is the world's wealthiest region D. is solely English-speaking
What is the name of the rock in the above image?
A) Breccia B) Limestone C) Shale D) Coquina
Red clays can be categorized as ________.
A. lithogenous sediments B. siliceous ooze C. hydrogenous sediments D. cosmogenous materials E. calcareous ooze
In the diagram, which layer has the most mixing of air?
A. I B. II C. III D. IV E. The most mixing of air is found in the border between II and III