Question

give the answer
important question ​

Answer 1

Answer:

5) 7

A) because the size varies from person to person

B)no it cannot be reversed

Answer 2

Answer:

A)••A pace or a footstep cannot be used as a standard unit of length because the length of footstep, forearm length and hand span of different person is different. ... So footsteps and other such measuring systems cannot be use as standard unit.

Explanation:

b)•••No, this change cannot be reversed. Because breaking of a toy is as irreversible change, one cannot regain the same toy.