challenge friends

the thick layer of air that surrounds the earth

• astronaut

• space shuttle

• atmosphere

THE ATMOSPHERE HAS HOW MANY LAYERS

• 3

• 5

• 2

AIR IS A MIXTURE OF

• GASES

• CHOCOLATE

• ATMOSPHERE

DOES AIR HAVE MASS ???

• YES

• NO

THE AMOUNT OF WATER VAPOUR PRESENT IN THE AIR

• HUMANITY

• HUMIDITY

• HUMILITY

WHAT IS USED BY ANIMALS AND HUMANS TO BREATHE

• NITROGEN

• GASES

• OXYGEN