Aplicația este accesibilă de pe ecrane late

1 / 5
1. __________ are an important source of oxygen.
Forests
Houses
2 / 5
2. We need __________ to breathe.
air
water
3 / 5
3. The forests are the green __________ of our planet.
eyes
lungs
4 / 5
4. Without trees the Earth will be __________.
lifeless
helpless
5 / 5
5. Oaks and birches are names of __________.
trees
flowers