There are three major factors that are related to the development of mental illness (biological, psychological, environmental). describe two biological causes that may influence the development of mental illness in an individual.(site 2)

begbugs can, roaches can, mosquitos can, ticks can, flys can,

during longer space exploration trips, crewmembers may develop vision impairment risks and short-term cardiac atrophy or a decrease in the size, strength, weight, and activity of the heart during space flight because they can experience microgravity. in addition, the long-term medical condition is loss of bone mineral density and radiation exposure.