(04.06 mc)
which environmental factor determines why coral reef populations are found only in shallow waters?
light is at its greatest concentrations.
predation is lowest.
salinity is more constant.
the temperature is warmer for reproduction.

Light is at its greatest concentrations

Explanation:

The coral reefs need several conditions so that they can survive. The most important though is the sunlight. The reason why the corals need sunlight is that they are performing photosynthesis, thus they need the sunlight to be able to do so. This sets a depth limit for the corals, as they can only survive at places where the sunlight can penetrate, thus in the shallow waters. It is also worth mentioning though that the majority of the corals also require warm waters to survive, but without the sufficient sunlight, the warm water will not help them a lot.

characterization of nanoparticles is a critical step in nanomaterial production as it provides information of dimension, morphology, surface charge, distribution and degree of surface functionalization.

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.