Explanation:
Electrons are typically removed from the valence shells, which are the highest s and p orbitals. Also, Hund's rule still applies here, but backwards. Electrons will be removed from their orbitals until all of them are unpaired, and then the unpaired ones will be removed.
May be true because velence shell is the outermost shell which can be removed.
Native Americans and Type O Blood
Modern Native Americans have very high frequencies of Type O blood.
In some places in North and South America, the frequency is as high as 100%. Anthropologists believe that early Native Americans arrived in North America by crossing over the Bering Land Bridge around 15,000 years ago, from East Asia.
Modern East Asian populations, with whom modern Native Americans share ancestry, do not have high frequencies of Type O blood. Instead, they have some of the lowest frequencies of Type O blood in the world.
B. Sickle-Cell Anemia
As many as 20-30% of people living in equatorial Africa have at least one allele on Chromosome 11 that codes for sickle-cell anemia (they have an, "S" rather than an, "A" allele). This is odd because usually, 80% of people who have two S alleles die before they can reproduce,
For each of the following cases:
1. What forces of evolution are at work? State all that apply.
Mutation
Natural Selection
Genetic Drift
Gene Flow.
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<span>The relative length of frog's small intestine and large intestine related to their functions is because the small intestine helps to absorb calories and nutrients from digested food.
The small intestine needs to be long enough such that it can go through a full digestion. The Large intestine is five feet long and three inch in diameter, while small intestine is twenty feet long and one inch in diameter.
Small intestine and large intestine have a difference in functioning that small intestine its function is to break down food and large intestine its function is to clean out the food which is not absorbed as wastes.</span>
Answer:
C
Explanation:
water is combined to be essential in food processing (photosynthesis)