SOIL

It consists of loose particles which contain organic substances, dissolved minerals, water and air.

• plants

• soil

• rocks

• fertilizer

Generally speaking, the darker a soil means _______

• contains more nutrients

• indicate lack of nutrients

Soil that contains decomposed plants or animals is called __________

• humus

• sand

• silt

• fertilizer

Which kind of soil do we use in constructing our buildings and houses?

• clay

• sand

• loam

• silt

How can soil be protected?

• digging deeper

• removing the top layer

• disposing garbage properly

• burn leaves in the soil surface

One effect of soil pollution is _________

• more fresh air

• plants grow well

• healthy environment

• disrupt plant growth

It is smaller than gravel.

• Boulder

• Sand

• Silt

• Clay

It is made up of very large pieces.

• Boulder

• Gravel

• Silt

• Clay

Have very fine particles.

• Gravel

• Sand

• Silt

• Clay

Composed of pieces smaller than Boulders.

• Gravel

• Sand

• Silt

• Clay