Explain how ozone can have both a beneficial and a detrimental role in the Earth's atmosphere.
What will be an ideal response?
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Areas identified by distinctive characteristics that distinguish them from surrounding areas are known as ____
Fill in the blank(s) with correct word
Toxicologists refer to the total amount of a chemical present in the tissues of an organism as ________
A) toxic content B) threshold content C) biomagnification D) bioaccumulation E) body burden
The asthenosphere lies entirely within
A. the lithosphere. B. the upper mantle. C. the ocean ridges. D. the lower mantle.
How is an alluvial fan formed?
A. A landslide blocks the stream, causing sediment to accumulate upstream. B. A stream erodes down through older terraces and entrenched meanders. C. Sediment is deposited by debris flows and streams that decrease in velocity along the mountain front. D. A dam increases the speed of currents below the dam.