Children's obesity is resulted from eating habits (pl) that enjoy include ham, hotdogs, hamburgers, etc. These fast foods are often exposed to the children whose parents are busy and find it difficult to take care of their everytime them all the time . Children tend to have fast foods in the school time or during the daytime. In that point, schools and teachers should instruct children to eat properly. In addition, school meals should include green foods and various nutrition. (nutrients?)

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Eating habits that include ham, hotdogs...
--> The children enjoy ham, hotdogs, etc., NOT the eating habits
--> Eating habits is plural in English

School is during the daytime so I don't know if you separated them because of weekends or what?

Another solid piece of work! Good job on the possessives in this bit.