Question

Which of the following is not the characteristic of bio-degradable substance?

• A. They will be broken down by the action of bacteria
• B. They change their form and structure over time
• C. They do not harm the members of ecosystem
• D. They persist in environment for long time

Answer 1

The correct option is D

They persist in environment for long time

Bio degradable substances are easily decomposed by microorganisms and thus can easily mix into the soil again after a short interval of time.