Steel cans weigh about 60% less than they used to. This is an example of __________.
a. Water conservation
b. Pollution control
c. Composting
d. Recycling
e. Manufacturing
Answer: d. Recycling
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What is the approximate depth of the caldera (from the rim down to the floor)?
The question is based on Map T-2, the “Umnak, Alaska,” topographic map (scale 1:250,000; contour interval 200 feet), Map T-21b, a satellite image; and Figures 35-3 and 35-4, a shaded relief map and a stereogram showing the Okmok Caldera (53°25'33"N, 168°07'38"W) on Umnak Island in the Aleutian Islands. What will be an ideal response?
The Law of the Sea treaty allows coastal countries to claim an EEZ extending up to 20 miles offshore
Indicate whether the statement is true or false.
Why are phytoplankton critical for marine life?
A) They are large contribution to marine food webs B) They generate massive amounts of atmospheric oxygen C) They are able to bind billions of tons of carbon into carbohydrates D) All of these choices
Cyclogenesis can occur in regions without a large horizontal temperature gradient
a. True b. False