Back pain because bone heart and lung have nothing to do with muscles
There should be options for this question. The correct answer is - He spends a long time at the computer and has a higher chance of adult obesity. Jacks lives a different lifestyle to is parents and grandparents which is a lot more sedentary. Because he isn't moving or exercising much he isn't able to keep the weight off and chances are that as he becomes older he will stay obese.
I would say A & B (not sure about C because it isn’t that dangerous?)
The synaptic gap, synaptic bulb, and plasma membrane are all structures of the synaptic cleft.
