MCQ
Which one of the following substances is easily decomposed by microorganisms?
- AA plastic comb
- BA copper plate
- CA steel bottle
- ✓An apple
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|
Time in Second
|
Distence travelled in metre
|
|
$0$
|
$0$
|
|
$4$
|
$2$
|
|
$8$
|
$8$
|
|
$10$
|
$25$
|
|
$12$
|
$36$
|