Nitrogen and Oxygen are both gases in the atmosphere.
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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The answer is d because atp is required to have cellular respiration
Answer:
Explanation:
Natural selection is process of differential survival and reproduction of the organisms which have better phenotypic traits over the other members of the same species. These traits help the organism to survive in unfavorable conditions and they are passed from the parents to the offsprings and through successive generations of the species.
For example, the development of long neck of the giraffe helped them to grab leaves from tree tops.