Question

if the earth loses its Gravity, then for a body

Answer 1

hello friend your answer !!!!!

this condition called micro gravity which results in
1)loss atmosphere means no air ,causes 
-loss of oxygen
-no ozone results in uv exposure
-no greenhouse effect causes freezing at night
-no combustion no transport or energy
2)loss of water 
3)deformation in muscles , bones
4)low pressure causes death among living things etc.

hope it helps you