The long root systems of native prairie grasses allow them to access greater supplies of water and generally pass through which three soil horizons?

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The O horizon is the uppermost layer of soil which consists largely of organic matter. The A horizon is a layer of mineral soil with high biological activity and is also known as topsoil. The B horizon is the layer beneath the A horizon that contains accumulated clay, nutrients, and minerals. The deep roots of native prairie grasses allow them to penetrate through the O and A horizon and reach the B horizon, which provides them access to greater supplies of water and nutrients. Therefore, the long root systems of native prairie grasses generally pass through the O, A, and B horizons.

The Long Root Systems of Native Prairie Grasses Allow Them