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Ksivusya [100]
3 years ago
8

Quaking Aspen (Populus tremuloides) reproduce via rhizomes, creating immense colonies that may include thousands of trees. One c

olony in Utah, nicknamed Pando, consists of a grove of ~47,000 trunks. Despite their massive size, scientists worry that these stands are vulnerable–why?
Biology
1 answer:
tatuchka [14]3 years ago
7 0

Answer:

These strands are clones, however, due to their low genetic variability, the population becomes susceptible to diseases taking place in plants. Pando comprises grove of about 47000 trunks, these all are genetically similar that develops from a solitary underground species, Quaking aspen tree. Pando is an extremely large clone.  

However, for the past some years, scientists are worried about Pando's health. For the past thousands of years, Pando was living in fine tune with the native wildlife population, but for the past some years, a shift in balance is noticed. As in the absence of the development of novel stems, nothing will be able to substitute the natural withering of the older ones, if this goes on, the death of Pando will take place.  

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The Tuskegee syphilis study raised serious concerns about ethical research because the researchers ________.
aivan3 [116]

Answer:

a) withheld information from test subjects about their condition

Explanation:

The Tuskegee syphilis study which was carried between 1932-1972 in the Macon County, Alabama on the African-Americans infected from syphilis.

The U.S. Public Health Service started the study promising the infected persons that they will receive the benefits from the studies like a healthy meal, proper antibiotic medication and other benefits.

But the U.S Public Health Service failed to provide the services mainly the medication in which antibiotic penicillin which could treat the disease was not provided to the patient. As a result of this, syphilis continued in their generations also and people and about 100 subjects died.

They were told that they had bad blood which cannot be treated and thus in 1972, this raised a question over this issue related to ethics as to why the penicillin was not provided as well why the person was kept away from the reality.

Thus, Option-A is the correct answer.

4 0
3 years ago
After watching the video on flooding, what would be a major change that can
Delicious77 [7]

Answer:

Both

Explanation:

Depends on what happened in that video. I would rewatch it and write about what the video said about flooding and relate it to the river. Could be an ice jam or something else slowing the flow of water suddenly opened up. A breaking dam? Flash floods from an abundance of rain. As the amount of water in the river increases, so does the flow rate. If the amount of water suddenly increases more than the river was used to/it could hold, it will flood.

Rewatch the video and see if this relates at all :)

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Eugene is listing the colors of the various atoms within the molecules. He would use the color ____________ to show carbon.​
erik [133]

Answer: black (graphite), transparent (diamond)

Explanation:

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3 years ago
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What phase does this represent?
Fudgin [204]

Answer:

I believe it would be mitosis.

Explanation:

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