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krek1111 [17]
3 years ago
15

True or False- The thermosphere contains no water vapor.

Biology
1 answer:
zmey [24]3 years ago
6 0

Answer:

True

Explanation:

The temperature can rise as high as 1500 C, the gas molecules are very far apart. This layer is completely cloudless and free of water vapour

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In this Landsat image of a rain forest, healthy vegetation appears red and deforested areas appear light blue. What explains the
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Colors are assigned to different reflected bands electromegnetic waves.

Explanation:

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2 years ago
The MAIN purpose of photosynthesis is to
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Convert carbon dioxide gas to oxygen gas.

produce the food the plant needs to grow.
However, some folks have missed the purpose of photosynthesis. It's not oxygen production. The primary function of photosynthesis is to convert solar energy into chemical energy and then store that chemical energy for future use. For the most part, the planet's living systems are powered by this process
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Describe the key features of the Watson-Crick model for DNA structure.
vagabundo [1.1K]

Answer:

Watson and Crick proposed the double helical model of DNA.

Explanation:

- This model says that DNA exist as double helix. It has two polynucelotide strands running in opposite direction i.e the strands are anti-parallel.

- Each polynucleotide strand is made up of several nucleotide liknked together by phophodiester bonds.

- The two strands are not coiled upon each other but the double strand is coiled upon itself around a common axis like the spiral stair case. Here base pairs forms the stairs and backbone of two strands form railing. Back bone contains sugar and phosphate.

- The base pairing is specific, adenine always pairs with thymine and guanine always pairs with cytosine. Thus if we see any base pair, it consists of one purine and one pyrimidine.

- The two strands of DNA thus show complementary base pairing.

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- One full helical turn involves ten base pairs and the base pairs are stacked  3.4 A apart.

- This form is called as B-form of DNA.

5 0
3 years ago
The cells that make up muscle are specialized to do their job by having many ?
Len [333]
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2 years ago
A member of the health care team is researching the etiology and pathogenesis of a number of clients who are under his care in a
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Answer:

The correct answer is B. A client who has increasing serum ammonia levels due to liver cirrhosis

Explanation:

Etiology is the study of origin or cause of any disease. Pathogenesis is the mechanism of causing disease by any pathogen. Pathogens use four-step to become pathogenic which are contact, colonization, invasion, and infection.  

In pathogenesis the symptoms of disease is observed not the cause so in option B increasing serum ammonia level is the symptom of liver cirrhosis which characterize pathogenesis rather than etiology and in other option, only cause of a medical condition is described so the correct answer is B.

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3 years ago
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