THE CORRECT ANSWER IS B. Hope this helps :)
B
Most of the time of the year, the sun is more or less overhead of the equator. This is why people living around the equatorial region observe the sun overhead across the year.
Explanation:
Therefore, the sun rays hit the equatorial region more or less perpendicularly, and the rays have a thinner atmosphere to travel through due to this angle.
Closer to the poles, the rays ‘hit’ the earth’s surface at an increasingly oblique angle and the rays have a longer atmosphere to travel (due to the spherical nature of the earth) hence losing most of its energy due to collisions with air molecules. This is why the sun fell less intense at the poles than at the equator.
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Answer:
Nitrogen 15, N15 isotope,
Explanation:
Generally Nitrogen has two isotopes N14 and N15. The N14 has 7 protons and 7 neutrons with the atomic mass of 28( n+p). However the N15 has 7 protons and 8 neutrons.Since Neutrons are heavier than protons and constituted greater percentage of the atomic mass of an element the N15 isotope is heavier than the N14 isotope.
Therefore, Ammonium chloride solution containing the labeled heavier N15 was initially added to the bacterial growing medium; so that the bacterial can use it to make their DNA, and divided manytimes so that N15 isotopes is fully incorporated Therefore the DNA strands which incorporated this will be heavier,(old) and easier to segregate to the lower band during centrifugation , for identification compare to the newer lighter ones.
<u>Thus the parent( </u><u>heavy/old</u><u>) containing DNA N15 and( New/light) in the daughter DNA N14 strands can easily be separated for identification during semi- conservative replication.</u>
Answer:
Both of these processes can happen thanks to alternative glucose breakdown Fermentation and cellular respiration begin the same way, with glycolysis. acid fermentation, as do the red blood cells in your body, which don't have