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Vocabulary Quiz
the tip of • biodegradable • apply
thin air • pharmaceutical
  1. Paper is more than plastic.
  2. We could just see tree behind the house.
  3. The ghost disappeared into .
  4. Drug stores sell lots of products.
  5. You should some sun screen to your skin.
Comprehension Quiz
Answer the following questions about the interview.
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1067 Nature Camp

Steven talks about a special nature camp in Costa Rica where students learn about nature.

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Vocabulary notes (text only) explain key vocabulary and phrases from the interview.

the tip of

It is in the tip of Costa Rica.

The tip of something is the point at the end of something. Notice the following:

  1. Ships at sea can only see the tip of an iceberg.
  2. We write with the tip of a pen.


We were using biodegradable products.

When something is biodegradable that means it breaks down into the environment without causing harm to the eco-system.

  1. They now use biodegradable paper bags instead of paper ones.
  2. This soap is biodegradable.


After you applied the herbal, the insects would disappear.

When you apply something, that means you put it over something, such as skin or a surface.

  1. He applied sunscreen to his back so he would not get a burn.
  2. She applied skin lotion on her hands.

from thin air

The insects would disappear from thin air.

When something disappears into thin air, it becomes invisible or nonexistent. We sometimes use the phrase to describe how something disappeared for no reason. Notice the following:

  1. My stuff was here one minute and then it just disappeared into thin air.
  2. After the explosion, the building vanished into thin air.


You don't need pharmaceutical drugs.

A pharmaceutical drug is medicine or health products that are produced in order to be sold. A pharmaceutical drug is the opposite of a natural drug or medicine, such as herbal medicine. Notice the following:

  1. I actually prefer pharmaceutical drugs because they work faster.
  2. Some people think pharmaceutical drugs do more damage than good.