type of soil that turns very hard when dry
process for making decomposing plant matter necessary for soil
the trace or remains of an organism that lived long ago, most commonly preserved in sedimentary rock
decaying plant and animal matter
resouces that humans and use and never use up
atoms arranged in repeating patterns
the way a mineral reflects light
natural nonliving solids made of one or more elements
figuring out the order in which events occurred
the process of rocks forming , wearing down, and them forming again
slippery soil that can hold water
a mixture of rock, plant material , animal matter, water, and air
preserving soil by using it wisely
the true color of a mineral
how well soil holds water
3 types of rocks
igneous, metamorphic, sedimentary
sedimentary rocks are formed by
loose material pressing together and forming over time
soil is important to animal life because
it supports plant life which is essential in the food chain
soil can be lost to erosion by
animals that eat all of the plants
topsoil can be preserved by
planting trees and other plants
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