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Kruka [31]
2 years ago
10

The oak tree fungal pathogen, Phytophthora ramorum, has migrated 800 kilometers in 15 years. West Nile virus spread from New Yor

k State to 46 other states in 5 years. The difference in the rate of spread is probably related to _________. A. the lethality of each pathogen B. the mobility of their hosts C. the fact that viruses are very small D. innate resistance
Biology
1 answer:
dlinn [17]2 years ago
8 0

The oak tree fungal pathogen, Phytophthora ramorum, has migrated 800 kilometers in 15 years. West Nile virus spread from New York State to 46 other states in 5 years. The difference in the rate of spread is probably related to the mobility of their hosts

<h3>What is West Nile virus ?</h3>

West Nile fever is brought on by the single-stranded RNA virus known as the West Nile virus (WNV). It belongs to the same genus as the Zika virus, dengue virus, and yellow fever virus, Flavivirus, and is a member of the family Flaviviridae. Mosquitoes, primarily Culex species, are the main vectors of the virus. Since birds are the major hosts for WNV, the virus continues to spread via a "bird-mosquito-bird" cycle. The virus shares genetic ancestry with the family of viruses that cause Japanese encephalitis.

The virus causes disease symptoms in both humans and horses, and symptoms are hardly seen in other animals. In Uganda, the human sickness was first recognized in 1937, and in the second half of the 20th century, it spread to many other countries.

To learn more about West Nile virus  from the given link:

brainly.com/question/1262992

#SPJ4

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Analysis Questions:
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<span>1. List five observations Darwin made about the Amblyrhynchus lizards.

a. They measure about 2-3 feet long.
b. They are cold-blooded.
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e. Their nostrils are connected to salt glands that allow them to expel excess sea salt. 

</span><span>2. Describe two examples of structural adaptations that Darwin observed.

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b. </span>Darwin observed two kinds of giant tortoises that are distinguished by the shapes of their carapaces (dome-shaped and saddle-shaped). 

3. <span>Describe two behavioral adaptations that Darwin observed.
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a. <span>The marine iguanas have developed several ways of coping with the cold. At night, they huddle together for warmth. 
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4. <span>Explain how these observations influenced his theory of evolution?
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These observations led Darwin to believe that if a certain trait is more advantageous in a specific environment, then the carriers of that trait are more likely to survive into adulthood and to generate offspring than those who do not have that trait. Eventually, the advantageous traits for a species will proliferate. Darwin later called this as "survival of the fittest".

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Which conditions would be the most favorable for an organism that reproduces asexually?
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The answer is C 100% sure
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Can someone help me with this question please :)
Masja [62]

Answer:

Electrons are negatively charged particles of an atom. All the electrons of an atom create a negative charge that balances the positive charge of the protons. The nucleus, which is the dense core of the atom, contains both protons and neutrons. Electrons, though, are outside of the nucleus.

Hope this helps

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Explanation:

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Which letter in Figure 1 represents meiosis? Why?
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The letter D in Figure 1 represents meiosis, while letter A represents mitosis. Meiosis is a reductional cell division.

Mitosis is a type of cell division where a parent cell divides to produce two genetically identical daughter cells (in this case, diploid cells).

Meiosis is a reductional cell division where a parent cell divides twice to produce four daughter cells having half of the genetic material.

Meiosis occurs in germinal cells, while mitosis occurs in somatic (body) cells.

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