Oral quiz grade3. Term2

____________ is a mixture of weathered rocks, minerals & humus

• Dead plants and animals

• Soil

• Humus

____________ are rocks that are broken down by weather .

• Soil

• Weathered rocks

• Topsoil

___________ is the first layer of soil which has a lot of humus.

• Topsoil

• Bed rock

• Subsoil

topsoil has dark color because of ____________

• Hematite

• Calcite

• Humus

Can a tin can decomposed and become a part of soil?

• Yes

• No

______________ is a decayed dead plants and animals.

• Humus

• Soil

• Cloud

____________ is a layer under topsoil.

• Humus

• Bed rock

• Subsoil

Bed rock layer is formed of ___________

• Clay

• Loam soil

• Weathered rocks

What layer of soil is best for growing plants?

• Topsoil

• bed rocks

• Clay soil

____________ help soil to get air.

• Birds

• worms

• Flies