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Serhud [2]
3 years ago
15

Why does it make sense for scientist to test just one variable at a time in an experiment?

Biology
1 answer:
Fed [463]3 years ago
5 0
If you test more than one variable in an experiment at a time than you wouldn't know what variable caused the change in the end.
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Why do you suppose there is that 42-mile difference?
Alex17521 [72]

Answer:

The earth rotates on the axis that passes through the north and the south of the planet and is of 24-hour duration. Similar to that of the rotation of the moon which is sideral, this rotation is in the anticlockwise direction. And this originated by the angular movement of the clouds of the dust and gases that have coalesced to for the solar system.

Thats answer is something else i think since your going up its much more faster then going around equator sin earth rotates on its axis

\Explanation:

6 0
3 years ago
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Genetic recombination plays a role in both maintenance and diversity within an organism. Explain how this balance is achieved an
weeeeeb [17]

Answer:

Crossing-over between homologous chromosomes (prophase 1), the random lining of homologous chromosomes (metaphase 1), and random fertilization are the mechanisms involved in genetic variation.

Explanation:

Crossing-over between homologous chromosomes (prophase 1), the random lining of homologous chromosomes (metaphase 1), and random fertilization are the mechanisms involved in genetic variation.

The Crossing-over events occur between two homologous chromosomes in the equatorial plane and make the daughter cells genetically different from the original one. The Chiasma is the position where two homologous chromatids interchange genetic information, giving a place for new genetic material or information to be provided to descendants. After crossing over, homologous chromosomes get separated again.  

On the equatorial plane, homologous paired together, randomly aline with their kinetochores facing opposite poles. The random arrangement of tetrads is different in every cell going through the meiosis process. There is no equal alinement between two cells. When tetrads aline in the equatorial plane, there is no predetermined order for each of the homologous chromosomes of each tetrad to face one of the poles and then migrate to it while separating.  Chromosomes of the homologous pair arrange to face any of the poles to migrate forward to it. Each of the chromosomes has two possibilities for orientation at the plane. When the new haploid cells are formed, the number of variations in each cell is also different and depends on the chromosomes that form that cell. The order in the equatorial plane is what introduces variation into the gametes, being almost impossible for two gametes to have the same genetic charge.  

Independent assortment occurs when the alleles from two or more different genes distribute in gametes independently from each other. In other words, a gamete receives an allele from a gene that does not depend on nor influence the allele of another gene in the same gamete. This can only be applied to independent genes. An organism gets only one of the members of the chromatids pair of each parent.  

7 0
2 years ago
Which carbohydrate is shown above?<br><br> fructose<br> sucrose<br> galactose<br> starch
Drupady [299]

Answer:

<h3> I guess that should be galactose </h3>
8 0
2 years ago
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Why is biomass a better alternative to coal?
Kryger [21]

D. Biomass can be regrown quickly

4 0
3 years ago
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Use the diagram below to answer the question photosynthesis cellular respiration energy in energy in energy out energy out
Aleks [24]
You need to post the diagram.
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