Soil

What is humus?

• The decayed remains of plants and animals.
• The loose material that covers much of Earth's surface.
• Something you eat! 

Tags

NGSS.5-LS2-1

The horizon soil that has less humus and particles that make up clay

• The A horizon

• The B horizon

• The C horizon

Crops with shallow roots don't grow well in _____________

• The desert soil

• The forest soil

(a)   means having to do with or coming from living things

Soil in _____________ has thin layer of topsoil with little humus

• desert

• forest

• oceans

A mixture of minerals, bits or rocks, and pieces of once-living parts of plants and animals is (a)  

Most plant roots grow in ___________

• top soil

• subsoil

• the C horizon

each layer of soil is called _________

• soil horizon

• humus

• organic

The _________ is the soil layer that is made of mostly larger pieces of rocks called bedrocks

• A horzion

• B horizon

• C horizon

_________ is the addition of harmful materials to soil, water, or air

• recycling

• humus

• pollution