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nignag [31]
3 years ago
10

Describe the data used by Watson and Crick to determine the structure of DNA

Biology
1 answer:
meriva3 years ago
8 0

they used Franklin's x-ray picture and data as well as other mathematical data to determine the specific structure of the DNA double helix. Compare and Contrast the structure of prokaryotic and eukaryotic chromosomes.

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Most of europe is located in the tropics (between the tropic of cancer and tropic of capricorn).
galina1969 [7]
This is B; false.

Europe is not located in the tropics. In fact, no European countries lie in the tropical region. Europe is located in the temperate climate zone. 
6 0
3 years ago
Morning commuter traffic in cities contributes to ____ smog. In this type of air pollution, a mixing of ____ from certain plants
azamat

Answer:

photochemical

hydrocarbon

Explanation:

Morning commuter traffic in cities contributes to<u> photochemical</u> smog. In this type of air pollution, a mixing of <u>hydrocarbons</u> from certain plants, nitrogen oxides from cars, and UV radiation from the sun results in a variety of pollutants, such as ground-level ozone, which can cause coughing and breathing problems.

<em>Photochemical smogs are caused by the photochemical reaction of hydrocarbon and nitrogen oxides in the lower atmosphere with sunlight playing a major role. The reaction of the hydrocarbon with the nitrogen oxide in the presence of light leads to the evolution of ozone gas while nitrogen oxide has the capacity to react with the sunlight on its own to produce nitrogen dioxide. This result in the formation of smog</em>

4 0
3 years ago
Most species of cyanobacteria are enclosed in a _____.
aliina [53]

Answer: mucilaginous sheath

Explanation:

7 0
3 years ago
Read 2 more answers
What is a earthquake?
Eva8 [605]
The answer is C
The reason why is because an Earthquake is the shaking that radiates out from the breaking of a rock
5 0
2 years ago
Nicholas is a college student who must present a summary of a recent chemical discovery to his class. What pair of sources would
alina1380 [7]

Answer:

Option D,  a research paper published in an academic journal and an approved PhD dissertation

Explanation:

Nicholas must present her discovery with back up of strong literature review. This literature review must include papers published in good journals and only approved research dissertation.  

An internet blog, news article and college level textbook are not considered as an approved study. These are not reviewed or approved by any peer group or associations.  

Good papers of any good journals are reviewed and examined thoroughly by the peers and thus they can be used as a backup of any study.  

Hence, option D is correct

7 0
3 years ago
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