PDS AP Environmental Science 8th Period 2011-12

        While we learned that the soil has 5 horizons (layers), we also learned that the second (A) horizon is the most important because it is the horizon where plants take root. This horizon is referred to as TOPSOIL, and is the main focus for farmers and anyone else trying to make a [...]

Tags: agriculture, erosion, nitrogen, phosphorous, soil

Hi folks! It was too close to the test to assign a scribe for today.  So, if you are interested in reviewing the nitrogen and phosphorous cycles on line, here are links to two great scribe posts from students (Emily and Evan) in last years APES group: Nitrogen Cycle Review Phosphorous Cycle Review The nice [...]

Tags: cycles, eutrophication, nitrogen, phosphorous