How long does it take for many plastics to decompose?
A) 50 years
B) 100 years
C) 250 years
D) 400 years
D
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What is the difference between a community and an ecosystem?
What will be an ideal response?
What is one reason diatomaceous earth is economically valued?
a. It can be used as a fossil fuel alternative. b. It can be used for various filtration systems. c. It can be broken up for gravel and used as building materials. d. It demonstrates the presence of "marine snow."
Glaciers are to U-shaped valleys as ________ are to V-shaped valleys
Fill in the blank(s) with correct word
In spite of having almost three times as many people as the United States, much of the African region is sparsely populated with an average population density only slightly higher than that of the U.S
Indicate whether the statement is true or false