It depend some plants have the waxy layer because of their cuticles and to make sure the leaf doesn't dry out or to protect it againts the harmful sun rays when directly shined on its good to have sun but not too much. HOPE THIS HELPS
Cancer cells continue to divide forever, with no limit
Yes. Mercury is nearly twice as heavy as tin. Explanation: The density of mercury is 13.534 g/cm3, and the density of tin is 7.31 g/cm3
