Question

Which of the following is/are correct matches w.r.t. differences between biodegradable and nonbiodegradable substances?

• A. Biodegradable substances can be recycled, whereas non-biodegradable substances cannot.
• B. By the action of microbes, biodegradable substances can be broken down but nonbiodegradable substances cannot.
• C. Organic and inorganic matters are composition of biodegradable and nonbiodegradable substances respectively.
• D. All of the above.

Answer 1

The correct option is D All of the above.

$\begin{array}{cc}\text{1. These can be broken down into simple, non-poisonous substance by the action of micro-organismsm in nature.}& \text{1.These can be broken down into simple, non-poisonous substance by the action of micro-organismsm in nature.}\\ \text{2. They can be recycled naturally as well as be man and their products do not pollute the environment}& \text{They cannot be recycled naturally as well as by man and their products cause environmental pollution.}\\ \text{3. The wastes are made up of natural ingredients.}& \text{3.The wastes are made up of synthetic materials.}\\ \text{4. They can produce useful products after biodegradation.}& \text{4. They remain unchanged chemically as they are non-biodegradable.}\\ \text{5. They do not disturb the ecological balance in nature}& \text{5. Most of the time they disturb the ecological balance in nature.}\\ \text{6. They persist for small time intervals in the environment.}& \text{6. THey persist fr longer time intervals in the environment.}\\ \text{7. Example-Paper, cowdung, wood crumbles etc.}& \text{7. Plastic bags, synthetic fibers, cans etc.}\end{array}$