There are three major factors that are related to the development of mental illness . describe two biological causes that may influence the development of mental illness in an individual.

The answer is genetic and health habits.

Genetics act as a predisposing factor. Studies have shown that having some genes makes one susceptible to mental illness especially at older ages. An example is the DISC1 gene, which has been associated with schizophrenia.

Health habits that expose one to mental illness include poor nutrition, exposure to toxins such as lead and substance abuse.

you can find happiness by thinking about your past that has full of happiness.

explanation:

to prevent people from getting the ebola virus, countries around the world paid to doctors develop a new vaccine. now that the vaccine has been made, doctors will need to experiment on a large number of people to find out if it works safely.

what is the greatest limitation that scientists are dealing with as they try to figure out how to experiment with the ebola vaccine?

meditation is a practice of sitting still and quiet for minutes or even hours. it has been practiced for thousands of years and is even a part of religious practices for some people. carefully controlled, repeated measurements of brain activity have shown that meditation does increase certain chemicals in the brain and even grows the part of the brain that people connect with their current surroundings and activities.

are claims about the effects of meditation most likely scientific or pseudoscientific?

not pseudoscientific, because people have made claims about it but scientific observations have not been made