BTN Episode 22, 2025

Where have delegates from more than 170 countries met to agree on a treaty to end plastic pollution?

• France

• Switzerland

• Austria

Nearly all plastic ever created still exists in some form today.

• True

• False

About how much plastic is currently contaminating our environment?

• 4.2 billion tonnes

• 6.2 billion tonnes

• 7.2 billion tonnes

A recent survey found that what percentage of kids were brushing their teeth only once a day?

• 11%

• 21%

• 31%

At what age should you start flossing?

• 2 years old

• 8 years old

• 18 years old

What is the layer of bacteria called that can build up on your teeth?

• Dentin

• Enamel

• Plaque

Which method of crystallisation does Diya use to make crystals?

• Evaporation

• Cooling

• Precipitation

Salt and sugar are NOT types of crystals.

• True

• False

Katie is the _th generation pilot in her family.

Katie is the second female flyer in her family.

• True

• False