Which of the following most significantly determines a community's access to potable water? a. access to clean raw water sources b. the availability of money c. local drought conditions d. the level of industrial development

b. the availability of money

Explanation:

Potability of water refers to the quality of a water being drinkable without having adverse health effects. The major barrier to water's potability is pollution, which ia mostly caused by anthropogenic activities.

A factor that most significantly determines a community's access to potable water is the AVAILABILITY OF MONEY. This is because the poor financial state of most communities has led to the involvement in activities that tends to pollute water bodies, even the clean raw water sources. Some of the activities include: open defecation, improper sewage $ refuse disposal etc. The availability of money will help a community to construct infrastructures to protect the potability of their water source.

Also, a community with available funds will build eco-friendly means of disposing wastes.

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.