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makkiz [27]
3 years ago
12

11. _______ refers to a series of vertical zones with distinctive climate and vegetation regimes. A. Urban expanses B. Temperatu

re inversions C. Sedimentation D. Altitudinal zonation
Geography
1 answer:
Alecsey [184]3 years ago
6 0
I think it is b because since it refers to climate vegetation it could be b mostly other answers dont make sense

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A radioactive element has a half-life of 1,000 years. If a sample of this element begins with a mass of 20 grams, how long would
Fynjy0 [20]

A radioactive element with a half-life of 1,000 years, and starting mass of 20 grams, will need 2,000 years to decrease to 5 grams.

Explanation:

The radioactive elements all have a specific half-life. Each element's half-life is well known, and they are used by scientists of numerous fields as they are excellent for determining the age of a particular item, be it or organic or non-organic nature. In this case, we have a radioactive element with a half-life of 1,000 years, and starting mass of 20 grams.

The half-life basically means that half of the mass of an element is lost during a particular period of time. For the element in question we need to find out how much time will be needed for it to decrease to 5 grams. In order to get to the result, we just need to add 1,000 years on every decrease of half of the mass:

20/2 = 10

10/2 = 5

So in 1,000 years, the element in question will decrease to 10 grams, and in further 1,000 years (2,000 cumulatively) it will decrease to 5 grams.

Learn more about radioactive decay brainly.com/question/9796067

#learnwithBrainly

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3 years ago
Which of the following mountains ranges found in the United States is heavily eroded ?
gladu [14]
Appalachian Mountains. It has been said that they were as tall as the Rocky mountains. I hope this helped. :)
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What shaped the economic, social, and political development of Greek civilization? a. the physical geography of the Aegean Basin
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Quizlet has the answer
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How does map scale affect cartography?
Cloud [144]

Answer:

The scale of a map is the ratio of a distance on the map to the corresponding distance on the ground. This simple concept is complicated by the curvature of the Earth's surface, which forces scale to vary across a map. Because of this variation, the concept of scale becomes meaningful in two distinct ways.

Explanation:

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Scientists are able to understand Earth's interior by studying seismic waves.

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3 years ago
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