All of the following can be treatments for nightmares except
a. improved diet
b. counseling
c. medication
d. anxiety

The correct answer is anxiety.

Nightmares are caused by the emotional issues related to the surrounding in which one is living. Anxiety can be one of the most prominent reason for nightmare but it cannot be used as a treatment. Having a healthy diet, counselling and medication in severe cases can help solve the problem of nightmare.

•there must be variation for the particular trait within a population.

•the variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).

•individuals with one version of the trait must produce more offspring than those with a different version of the trait.good

explanation:

photosynthesis makes the glucose that is used in cellular respiration to make atp. the glucose is then turned back into carbon dioxide, which is used in photosynthesis. while water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.