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LenaWriter [7]
3 years ago
7

Many diseases are caused by viruses or bacteria, which may be considered introduced species under certain circumstances (althoug

h viruses are not truly living organisms and need another organism as a host). Describe the following exotic diseases and explain their origins.
1.Smallpox
2.Chestnut blight



I don't need you to do it for me I just need help.
Biology
1 answer:
Elodia [21]3 years ago
7 0
Smallpox- began Africa, spread through trade and human interaction.
Chestnut blight-isn't this a chestnut found in America?
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Which of the following best explains the modern connection between people and food?
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Today most people in developed countries have a scarcity of food sources.

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The two most abundant elements in the oceans are sodium and chlorine. Together they make a salt, halite. Sodium is dissolved in
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Volcanic gases. (Ans A)

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3 years ago
In a certain population of fruit flies, 640 out of 1000 have red eyes, while the remainder have sepia eyes. The sepia eye trait
irga5000 [103]

Answer:

The correct answer is 160.

Explanation:

Based on the given question, the total number of fruit flies is 1000, of which red eye flies are 640. Thus, the number of sepia eye flies will be 1000-640 = 360.  

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Therefore, p = 1-q = 1-0.6 = 0.4.  

The frequency of homozygous dominant allele is denoted by p^2 = 0.16.  

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