Air bubble barrier helps stop plastic waste from entering the ocean

The video discusses a bubble barrier system in Amsterdam's Western Dock that collects plastic waste from the canal. A previous trial showed it collected 86% of riverborne plastic. The system uses water flow to guide waste to a catchment area, supplementing boats that collect 42 tons of plastic annually. The barrier also brings submerged plastics to the surface and oxygenates the river, preventing algae blooms and supporting the aquatic ecosystem.

What is the primary function of the bubble barrier system introduced in the first section?

• To generate electricity

• To collect plastics from the canal

• To filter water for drinking

• To transport goods across the canal

How does the diagonal placement of barriers help in collecting plastic waste?

• It uses wind currents to move plastics

• It uses water flow to guide plastics to a catchment system

• It attracts plastics with magnets

• It uses sound waves to direct plastics

What is the annual contribution of garbage collection boats in cleaning plastic trash from the canal?

• 5 tons

• 10 tons

• 100 tons

• 42 tons

What additional benefit does the bubble barrier provide to the river ecosystem?

• It pumps oxygen into the river

• It changes the river's color

• It increases fish population

• It reduces water temperature

How does the bubble barrier help in dealing with submerged plastic objects?

• It uses nets to catch them

• It generates an upward flow to bring them to the surface

• It dissolves them in water

• It pushes them to the riverbank