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Thus the project of sending humans to Mars would require solving an array of problems the Moon missions did not have to face.

Thus the project of sending humans to Mars would require solving an array of problems the Moon missions did not have to face. 850Yx

The lecturer disputed the ideas that it a mission to mars would be impossible because of its long distance away from earth. He asserts that difficulties facing this mission could be resolved through several means. First, The lecturer argues that hydroponic cultivation can overcome the difficulties of carrying large amount of food in the trip. The author claims that it is impossible to carry large amount of food which is needed for the trip. However, the lecturer notes that through hydroponic cultivation, it is possible to grow food in water instead of soil, Therefore, this technique save space and will minimize the amount of food needed on the trip. , Moreover, plants will take carbon dioxide in the air and release oxygen which is needed for breathing. Second, through exercise and calcium and vitamin D intake it is possible to overcome the negative effect of zero gravity on the health of astronauts. The author claims that a long trip to Mars would cause atrophy to muscle to muscles and bones. Again, the lecturer contends, that with regular exercise and with Calcium and vitamin D intake, it is possible to overcome the negative effect of zero gravity on Mars even it the trip is too long. Finally, the lecturer states that damaging effect of radiation is true only when the sun is active. Therefore, a detector could be place on the spaceship to detect when is the sun is active. Having a detector on the spaceship would allow scientists to build a small shielded compartment for astronauts to stay in when the sun is active. Thus, this will not increase its weight.

The You use this word too often, consider replacing it withprofessorinstructor
lecturer
 disputed the This phrase/word (depending on the context) can be potentially replaced with :thoughtsconceptsnotions
ideas
 that it a mission to The planet and the god are written with uppercase. 'mars' refers to the verb 'mar' meaning to spoil, or the plural of the noun 'mar' meaning blemishes.Mars
mars
 would be impossible This phrase/word is too simple and can be replaced with:due to the factin light of the fact thatowing to the fact that
because
 of its long distance away from earth. He asserts that difficulties facing this mission could be resolved
 through several means.

First
, The You use this word too often, consider replacing it withprofessorinstructor
lecturer
 argues that hydroponic cultivation can overcome the difficulties of carrying large amount of You use this word too often, consider replacing it withfeedcuisinesnackmeatdrinkfoodstuff
food
 in the You use this word too often, consider replacing it withtrekrunexpeditionoutingswingtour
trip
. The author claims that it is impossible to carry large amount of You use this word too often, consider replacing it withfeedcuisinesnackmeatdrinkfoodstuff
food
 which is needed
 for the You use this word too often, consider replacing it withtrekrunexpeditionoutingswingtour
trip
. However
, the You use this word too often, consider replacing it withprofessorinstructor
lecturer
 notes that through hydroponic cultivation, it is possible to grow You use this word too often, consider replacing it withfeedcuisinesnackmeatdrinkfoodstuff
food
 in water instead
 of soil, Therefore
, this technique save space and will minimize the amount of You use this word too often, consider replacing it withfeedcuisinesnackmeatdrinkfoodstuff
food
 needed on the You use this word too often, consider replacing it withtrekrunexpeditionoutingswingtour
trip
. Loose punctuation mark.apply
,
Moreover
, plants will take carbon dioxide in the air and release oxygen which is needed
 for breathing.

Second, through exercise and calcium and vitamin D intake it is possible to overcome the This phrase/word is too simple and can be replaced with:adverse
negative
 effect of zero gravity on the health of astronauts. The author claims that a long You use this word too often, consider replacing it withtrekrunexpeditionoutingswingtour
trip
 to Mars would cause atrophy to muscle to muscles and bones. Again, the You use this word too often, consider replacing it withprofessorinstructor
lecturer
 contends, that with regular exercise and with Calcium and vitamin D intake, it is possible to overcome the This phrase/word is too simple and can be replaced with:adverse
negative
 effect of zero gravity on Mars even it the You use this word too often, consider replacing it withtrekrunexpeditionoutingswingtour
trip
 is too long.

Finally
, the You use this word too often, consider replacing it withprofessorinstructor
lecturer
 states that damaging effect of radiation is true This phrase/word (depending on the context) can be potentially replaced with :exclusively
only
 when the sun is active. Therefore
, a detector could be place on the spaceship to detect when is the sun is active. Having a detector on the spaceship would This phrase/word (depending on the context) can be potentially replaced with :authorize
allow
 scientists to build a This phrase/word is too simple and can be replaced with:tiny
small
 shielded compartment for astronauts to stay in when the sun is active. Thus
, this will not increase its weight. 