Question

Four points to reduce friction

Answer 1

1 polishing
polishing the surface reduce irregularities and hands reducing friction

2 lubrication
it provides a layer of lubricant on which the body can easily slide

3 streamlining
fast cars, boat, plane etc having a streamlined body this is to allow air to easily flow by without offering much resistance

4 use of correct combination of surfaces in contact
use of alloys on moving and sliding part reducing friction because alloys have a low coefficient of friction

plz mark as brainlist

Answer 2

Answer:

low reflection

nothing will stop

we will not able to make home for growing population