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ELEN [110]
3 years ago
11

What did walleye evolve from?

Biology
1 answer:
alex41 [277]3 years ago
8 0
Walleye like the fish? Orrr is it another term
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bedbugs are parasites? Explain your reasoning using what you’ve learned about parasitic relationships.
velikii [3]

Explanation:

Bedbugs are parasites that rely on blood to survive. They can feed on the blood of any mammal, although they appear to prefer the blood of humans. They are attracted to the warmth surrounding mammalian bodies and the carbon dioxide present in breath expiration. It is usually these factors that guide bedbugs to locate a suitable host for feeding. DOES THIS HELP?

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3. What types of cells does the cell theory apply to?
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All cells I’m pretty sure
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Individuals with Down syndrome have an extra chromosome 21. This is an example of which type of chromosome disorder?
Lina20 [59]
The correct answer is choice B. Nondisjunction.

Nondisjunction disorder occurs when either the homologous chromosomes or the sister chromatids fail to disconnect properly during cell division. This failure results in daughter cells with an abnormality in chromosomes. 

I hope this helps you and have an awesome day!! :)
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3 years ago
Describe the path of an impulse associated with lifting your arm. What part of the brain starts this impulse?
timama [110]
Sensory nerves that are part of the peripheral nervous see your arm. Nerve impulses are brought to the brain by interneurons and the brain processes the information and you decide to lift your arm. Nerve impulses from the brain travel again through internuerons and into motor nerves that control the movement of your arm.
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Why is a longitudinal study better than a cross-sectional study for examining how many years cancer survivors stay in remission?
Liono4ka [1.6K]
<span>A cross-sectional study examines all of the participants at one time. So for a cross-sectional study of cancer survivors, we would gather some sample of former patients and find out how long they have been in remission.

The problem with that cross-sectional design is we would be missing the people whose cancer had returned and caused them to die before our experiment started; we would have introduced a problem called "survivor bias" by only counting people who were STILL in remission and still alive.

A better experiment will use a longitudinal design of enrolling people whose cancer has just gone into remission, and following them to see how long they stay healthy.</span>
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