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il63 [147K]
3 years ago
11

The origin and evolution of viruses is controversial. Discuss whether you think viruses evolved before the first cell or whether

they have
coevolved and are perhaps still coevolving with their hosts.
Biology
1 answer:
Illusion [34]3 years ago
5 0

Answer:

sorry i don't know the answer

Explanation:

answer ka hrit no aw sorry

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Give an example of a species that has been introduced to the United States and tell what its effect has been
Yuliya22 [10]

Answer:

An introduced species, alien species, exotic species, adventive species, immigrant species, ... Non-native species can have various effects on the local ecosystem. ... Some species have been introduced intentionally to combat pests

Explanation:

4 0
3 years ago
Tom was in a coma after an automobile accident which killed his wife. His physical health improved and there is no medical reaso
hjlf

Answer:

If the inability of Tom to move his arms and legs has no apparent physical reason, it is likely that Tom may be suffering from conversion disorder.

Explanation:

Conversion disorders have a psychological basis, and they are dissociative disorders where there is a functional disturbance for no apparent reason. The term conversion means that a psychological problem can become a physical manifestation.

Tom is not able to move his arms and legs, but there is no medical reason why. Because of the trauma of losing his wife in an accident, it is possible that the cause of his paralysis is psychological, due to a conversion disorder secondary to a depressive disorder.

Learn more:

Difference between illness anxiety disorder and conversion disorder brainly.com/question/4413977

8 0
3 years ago
In this food chain, energy moves from one living thing to another. What source of energy starts this food chain?
elena-14-01-66 [18.8K]

Answer:

How do you work out energy transfer in a food chain?

Within the food chain energy can be passed and transferred from one organism to another. Whilst mammals get their energy sources from food – whether this be eating other animals or eating vegetation; plants get their energy from photosynthesis. Energy is passed between organisms through the food chain.

7 0
3 years ago
Which phrase is the best summary of the model shown?
Sveta_85 [38]

Answer:

A

Explanation:

6 0
4 years ago
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What is meant by reproductive isolation?
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Reproductive isolation is when 2 organisms can not mate and produce viable offspring. Once 2 organisms are reproductively isolated, this is considered speciation event.
6 0
4 years ago
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