5th grade Lesson 4 Science Earth's Rock and Soil
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People ruin soil by burying hazardous _____.
They spray soil with _______ to kill weeds.
These materials add up to ______ which is adding any harmful substance to Earth's land, water or air.
Trash like plastic that doesn't _____ makes soil unusable.
When people grow the same crops every year, it depletes the ________ in the soil.
If plants are removed, wind and rain will expose soil to ________.
Another cause is allowing cattle to _____ too long in the same spot.
The soil is exposed whenever a ______ is cut down.
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