Soil

Soil is a mixture of small pieces of rock and decayed plat and animal matter, called _______________.

Soil contains ___ ________ that can be filled with air or water, meaning tha tit is porous.

Soil forms in layers called ______________.

Each layer of soil has its own _________ that make up an soil profile.

Teh top layer, or topsoil, is rich with humus and ________________

The bottom layer of the soil is made of broken bits of bedrock or _________ ______

Evidence of a living thing from long ago is presered as a ________

Many fossils are found preserved in __________ rock

Fossils also form in spaces left in rock by dead organisms. Tehse spaces are called ____________.

Some fossils are formed when an organism such as a leaf is pressed into a soft surface, leaving an ___________.

An entire organism can be preserved, such as an insect trapped in _____________ or a mammouth trapped in ice.

Something that can suppley ______________ is a fuel.

Fuel that is made from the remains of ancient living thigns is a ___________________

Fossil fuels are ______ resour4ces because thery cannot be replaced easily

Air, water, plants, and animals are _____ resources because they can be replaced in nature.

Renewable energy sources include solar energy, _________ that harness the wind, and energyfrom heat inside Earth.