The superficial layer of the Earth's crust is...................layer.

• thick

• rocky

• loosened

• unfragmented

The soil consists of .....................

• minerals, water and air only.

• plant roots only.

• decayed organic materials only.

• all of the answers.

The igneous rocks are formed of molten material underneath the Earth's crust, which is called..................

• magma.

• lava.

• core.

• mantle.

The volcanic flows is known as .............

• magma.

• lava.

• core.

• mantle.

The solid basis of the Earth's crust is unfragmented.

• True

• False

The plant roots extend easily through the solid basis of the Earth's crust.

• True

• False

who is he?

• ben 7

• ben 10

• ben 10000

• ben 100

Choose the shortest tree:

• 
• 
• 

Choose the correct word for the picture

• vet

• chef

• police officer