Root Crops

ROOT CROPS Crops in which the edible portion is taken from under the ground. These include potatoes, carrots, parsnips, beets.

Rotation

ROTATION A regular scheme in which crops are planted in different parts of the garden in order to change the demands made on the soil.

Soil Erosion

SOIL EROSION The washing away or blowing away of topsoil. Trees and other plants hold the soil in place and help reduce the force of the wind. Soil erosion happens when trees and plants are cut down.

Stone Mulching

STONE MULCHING Placing rocks and stones around plants, usually trees, to prevent moisture loss by the sun’s evaporation and to stop weeds.

Sunlight Zone

SUNLIGHT ZONE The upper 488 feet (150 m) of the ocean, where sunlight penetrates and where about 90 percent of all marine life live.