Which of these is an example of a chemical change?

1) burning of wood

2) Rusting of iron

3) digestion of food

4) making of curd

5) baking or cooking

Explanation:

these are irreversible change too.

from the original order (top to bottom) the new order will go

1 (founder)

4 (hawk)

2 (mutate)

3 (next generation)