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dexar [7]
3 years ago
14

Why is the outside of a fridge freezer white and shiny?

Biology
1 answer:
Mila [183]3 years ago
7 0
To reflect beat away from the fridge.... it also keep the fridge cooler
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How is Bohr's atomic model different from Rutherford’s model?
Marianna [84]

the answer is.... A .

3 0
3 years ago
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Explain how salinity and temperature affect water density and how the salinity of the oceans can be both increased and decreased
finlep [7]

Answer:

Salinity is the <em><u>salt concentration</u></em> in water. Oceans salinity and temperature affect density of water, Higher the salinity denser the water and Lower the temperature denser the water.

Explanation:

As we go down in the ocean , temperature goes down and denser the water.

Less dense water will be on top and higher the density will be on bottom. Warmer water will be on top.

Salinity <em> increased</em> in ocean on evaporation of sea water and formation of ice in water. Weathering of rocks , formation of soil also add minerals and salt in ocean.

Melting of snow, ice in sea, addition of river freshwater and precipitation of rain <em>decrease </em>the salinity of ocean.

8 0
3 years ago
In a small, isolated population of piranhas, one individual is born with a synonymous mutation in a gene that codes for the beta
IrinaVladis [17]

Answer:

The correct answer is: Genetic Drift.

Explanation:

  • In any population of any species having two or more alleles encoding for different genes, the frequency of occurrence of each allele among the individuals of a population can vary.
  • The frequency of one allele may be far more or far less than the frequency of other alleles.
  • The frequency of any particular allele is dependent on factors like random mating among individuals as well as natural selection, that tends to increase the frequency of those alleles which provide a survival advantage to the individual in a given environment.
  • Genetic drift can be defined as a phenomenon due to which the frequency of an allele encoding for a particular gene undergoes drastic change (increase or decrease) in a population due to random mating as well as natural selection.
  • In the given statement, one individual of an isolated population of piranhas underwent synonymous mutation in the beta-globin encoding gene.
  • A synonymous mutation can be defined as such a change in the nucleotide sequence of a gene that does not affect the sequence, structure or function of the protein encoded by it.
  • The increase in the frequency of the mutated form of the beta-globin gene after five generations to 5% indicates that due to the impact of random mating or natural selection or both, this has happened.
6 0
3 years ago
When a cell does not contain a nucleus, where is the DNA?
Kay [80]

Answer:

The cytoplasm

Explanation:

Prokaryotic cells do not have nucleui so their DNA floats around in the cytoplasm.

8 0
3 years ago
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Animal nutrition and dietics
Ugo [173]

Answer:

An animal nutritionist specializes in the dietary needs of animals in captivity, such as pets, farm animals, and zoo animals.

Explanation:

hope this helps

4 0
2 years ago
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