Write a letter to inform a potential astronaut, or the family members of an astronaut, about what to expect during a year long mission to space. In your letter explain to them how their body (or their family member's body) will react to being in zero-gravity. Make sure to compare the normal functions of your two body systems with how they would be altered during space travel, describing what they should expect so that they can prepare for their year-long mission.

the sun creates it's own light, also gives light and life to bunch of stuff like plants,animals,humans etc.photosyntesis is the process of making food which needs sun,water,nutrients etc.

osteogenesis imperfecta (oi) refers to a congenital ailment of bones. in the condition, the bones become brittle or fragile. this ailment is a general result of the defect or mutations in the genes (colia1 or colia2). this mutation results in imperfect collagen formation either in quantity or quality wise.  

there are eight kinds of oi defects, and each kind varies with certain distinctions in symptoms. the usual symptoms include frequent bone fractures, loss of hearing in infants, protruding eyes, discoloration of the white in the eyes, respiratory issues, loosening of the joints, short stature, and other symptoms.