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it is predicted that the population of a country is going to increase in next two decades. what might be one result of the population increase?

a.

drinking water will be readily available.

b.

basic needs, such as food and water, will be scarce.

c.

food insecurity will decrease.

d.

more farmland will become available per person.

Answer: B.  Basic needs, such as food and water, will be scarce.

As the population increases, the resources necessary to feed the additional persons will also increase. However, basic resources such as food and water are not unlimited. Some countries have more and some less.

Thus, the amount of available drinking water will decrease as well as the available farmland. Due to more mouths to feed, food insecurity will increase as it is uncertain if it is possible to adequately feed the new population.

i don’t no. suiopgohjk

an individual’s sex (i.e., whether they are a male or female) is determined by the sex chromosomes. most people have two sex chromosomes, one that is inherited from their mother and one that is inherited from their father. typically, females have two x chromosomes (xx) and males have one x chromosome and one y chromosome (xy). conditions caused by changes (“mutations”) in genes located on the x chromosome are considered x-linked.

x-linked recessive inheritance

most x-linked conditions are recessive. this means that in a person with two x chromosomes (most females), both copies of a gene (i.e., one on each x chromosome) must have a change or mutation whereas in a person with one x chromosome (most males), only one copy of a gene must have a mutation. a female with a mutation in one copy of a gene on the x chromosome is said to be a “carrier” for an x-linked condition. a male with a mutation in a gene on the x chromosome is typically affected with the condition. because females have two copies of the x chromosome and males have only one x chromosome, x-linked recessive diseases are more common among males than females. however, x-linked recessive diseases can occur in both males and females.

for x-linked recessive disorders, an unaffected carrier mother who has a mutation in a gene on the x chromosome can transmit either the x chromosome with this mutation or a “normal” x chromosome to her children. if the father is unaffected, none of her daughters will be affected and all of her daughters will be unaffected—since they will inherit at least one normal x chromosome from their father. however, each daughter will have a 50% chance of being an unaffected carrier like her mother and a 50% chance of both x chromosomes being normal.