Choose the suitable words to complete the word combinations about global concerns.

Choose the correct option.

The [green home|greenhouse|bluehouse] effect

An environmental [animal|percent|problem]

[Child|Children|Childhood] labour

A rescue [teen|team|tin]

An [rain|cloud|ice] cap

First [aim|aid|air]

[Environment|Endangered|Danger] animals

Global [warm|warming|warmer]