Which statement gives one reason that watershed protection programs are needed in Virginia Ecosystems need to be controlled

Foods must be prevented

Dams can be damaged and may require repair

Wildlife can ruin water source when building habitats

Dams can be damaged and may require repair

Explanation:

This is imperative to  provide    needed supports and maintenance  for the aging dams,with capacity of up to 11,000. This dams were created as far back as 1948.Therefore the programme was geared towards effective re-habitation  for  maximum efficiency.

This repair programmes was termed Dam Rehabilitation Programme.And the secretary of Agriculture was given the authority to ensure effective execution of the programme.

In  the state of Virginia,a  total of 150 dams  were part of the government landscape through the rehabilitation programme, and 11 of these have been well studied. .Todd Lake,Robinson Hallow, Lake Barton are some of these examples.

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.