A. The sun heats the air at the equator, followed by hot air rising and moisture condensing

Biology

1 answer:

ira [324]3 years ago

8 0

Answer:

B. Air moves towards the poles as it cools

Explanation:

The image represent convection cell or Hadley cell is a natural phenomenon in the atmosphere that occur due to difference in the density within a body of liquid or gas. These differences in density causes rise and fall in currents.

The process in step A refers to when hot air moves up and in the step B, the hot air encounters a cold surface, it direct exchange the heat with cold surface and the air cools down and move towards the poles.

Hence, the correct answer is "B. Air moves towards the poles as it cools".

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2. In a certain fish, blue scales (BB) and red scales (bb) are codominant. When a fish has the

Evgen [1.6K]

Upon crossing BB with bb, we will get a hybrid of Bb.

Codominance is a phenomena in genetics where two alleles (different forms of the same gene) express themselves equally in an organism. As a result, characteristics linked to each allele are shown at the same time.
The MN blood group system in humans is an illustration of codominance. M and N alleles control the MN blood type. Red blood cells from people who are homozygous for the M allele carry a surface molecule known as the M antigen. On their red blood cells, those who are homozygous for the N allele contain the N antigen. A heterozygote is a person who carries both antigens.
(a) Genotype of blue scales fish will be BB.
(b) Genotype of blue scales fish will be bb.
(c) Genotype of blue scales fish will be Bb.

So, in this case B and b alleles will express equally.

Learn more about co-dominance:

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1 year ago

Which gas is the most abundant in Earth's atmosphere?

spayn [35]

Answer:

Nitrogen

Explanation:

nitrogen, which accounts for about 78% of the mass of dry