Biodegradable

The video discusses the biodegradation process by bacteria in the soil and highlights the issue of non-biodegradable man-made polymers, which can persist in the environment for decades if not recycled. It also covers the efforts of scientists to develop biodegradable alternatives that match the quality and cost of current polymers, such as plastics, rubbers, and adhesives.

What role do bacteria in the soil play in the breakdown of materials?

• They prevent materials from breaking down.

• They speed up the breakdown process.

• They make materials more durable.

• They have no effect on material breakdown.

What is a major environmental concern regarding synthetic polymers?

• They are too easily broken down by bacteria.

• They are not strong enough for industrial use.

• They are too expensive to produce.

• They are not biodegradable and can last for decades.

What is one of the goals of scientists working with polymers?

• To develop biodegradable alternatives.

• To make polymers more expensive.

• To reduce the use of polymers in everyday life.

• To create polymers that are indestructible.

Which of the following is NOT a type of polymer mentioned in the video?

• Plastics

• Adhesives

• Rubbers

• Metals

Why are scientists interested in developing new types of polymers?

• To eliminate the use of polymers entirely.

• To find alternatives that are both effective and affordable.

• To increase the cost of production.

• To make polymers more difficult to recycle.