Which of the following describes why wetlands are important to the water cycle?
a) dense vegetation filter out pollutants in the water
b) open meadows to filter out pollutants in the water
c) dense vegetation allows for biological magnification in the water
d) open meadows allow for biological magnification in the water

A) dense vegetation helps filter out pollutants in the water

Explanation:

The wetlands are areas that are covered with shallow waters and usually have very dense vegetation. The dense vegetation is very important as it is an excellent natural filter for the water, and the incoming polluted waters are usually easily purified in the wetlands. This is very important for the water cycle because if the water is polluted and it continues it cycle like that, then it will result in pollution on all levels in all spheres, making big environmental problems in all of the Earth's spheres.

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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.