How does soil help us in controlling the earth's climate?
A. Absorbing carbon dioxide
B. Filtering groundwater
C. Purifying rain water
D. Breaking down soil contaminants
Answer: A
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In terms of Map Scale, a ratio of 1:2,000,000 means
A) 1 unit on the map represents 2 million of the same unit on the ground. B) 1 unit on the ground represents 2 million of the same unit on the map. C) the ratio between the smallest and largest features on the map. D) the ratio between the largest and smallest features on the map. E) the number of maps in print.
Recent research has indicated that about ________ percent of seafood sold with a sustainable label is not meeting the criteria of sustainability
A) 10 B) 15 C) 20 D) 25 E) 50
The ________ system of timber harvesting involves leaving small numbers of mature trees in place to provide shelter for seedlings as they grow
A) clearcutting B) nursery-tree C) shelterwood D) single-tree selection E) "cherry-picking"