1) Why we breathe ? .

we breathe to live

Explanation:

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Explanation:

(We breathe because oxygen is needed to burn the fuel [sugars and fatty acids] in our cells to produce energy.) What happens in the process of respiration? (Oxygen is brought into the lungs via breathing, where it is transported by red blood cells to the entire body to be used to produce energy.

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step 1: replication fork formation.

step 2: primer binding.

step 3: elongation.

step 4: termination.

explanation:

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"do a testcross with a homozygous recessive plant."