1) tapping latex from rubber trees during the period of leaf falling is not suitable.2) mitochondria is present in large numbers in cardiac muscles cells than in the body muscle cells.3) although frictional force is acted against the motion of an object, it is used to move the motor car forward.4) air inflated tyre tubes will be used to float a sinking object.5) magnet is used to seperate sulphur and iron from it's mixture, but after the iron-sulphur mixture was heated both cannot be seperated by a magnet.6) there is evidence that rarely available gold was used by man in the ancient period, but no evidence for using the abundantly available metal aluminium in that period.
2cardiac muscles are the muscles that pump blood through the heartsince they constantly need energy, they need more mitochondria, the parts of the cell that create energy4Air is less dense than water, so air inflated tubes float6gold is much easier to work with, it is more malleable nd ducticlein the ancient times they didn't have the resources to form things out of aluminum.
