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antiseptic1488 [7]
3 years ago
5

This cold river of air travels from west to east in the northern hemisphere. Last winter, it dipped far south to bring cold air

and snow to many southern states. This is the A) Hadley wind. B) polar jet stream. C) Arctic jet stream. D) tropical jet stream.
Biology
2 answers:
liraira [26]3 years ago
5 0

Answer:  The answer is polar jet stream because the polar jet stream dips low over the Northern United States during the winter to bring cold air. In the summer, the jet stream retreats and brings cool air to the Northern United States.

Explanation:

GaryK [48]3 years ago
4 0

Answer:

i think its b

Explanation:

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exis [7]

Compound microscope is being used..

Hope it helped you... pls mark brainliest also

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2 years ago
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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
The form of energy most responsible for producing sunlight is A) heat energy. B) nuclear energy. C) chemical energy. D) mechanic
bija089 [108]

Answer:

the actual answer is B

Explanation:

The form of energy most responsible for giving us sunlight is nuclear energy. The sun produces energy through nuclear fusion in its core.

3 0
3 years ago
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Where does anaerobic respiration occur in the cell?
nirvana33 [79]

Answer:

cytoplasm

Explanation:

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2 years ago
Can octopuses regenerate teeth?
Kitty [74]
No they cannot. Lol lol lol
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