________________ is needed by us to stay alive.

• Oxygen

• Vapor

Magnets affect materials made of ______________ and _____________.

• iron and copper

• iron and steel

• iron and paper

• iron and wood

My mother wears a ___________ on her wrist.

• Watch

• clock

Air contains many _______________.

• Liquids

• Gases

Sunflowers make a poison that kills plants around them.

• True

• False

What is happening to the plants in spring?

• they are dying

• they are growing

• they are not doing anything.

When the seed is planted __________ grow down.

• flowers

• roots

• stems

Which object would a magnet attract?

• A glass

• An iron or steel nail

• A book

• A flower

Broccoli is a flower.

• True

• False

Muscles need __________ to become strong.

• Air

• Food