Life on Land
Why horses and cattle help restore Guanacaste forest of Costa Rica?
Provides shade, food
Recall (1 year) : climate dfines biomes, the “shape” of vegetation
Soils in turn greatly affect other aspects
(roots, water, nutrients,..)
Soils typically form layers (horizons_ reflecting a range of physical and biological
Types of Horizons
O- Organic - litter on top, fine litter deeper soil and living creatures, branches.
Leaves as you move deeper it will be more fragmented chopped.
A – Mineral Soil Some organic matter. Clay, iron, aluminum silcates and soluble
organics leach out gradually.
B – Depositional. Materials leached from A settle in B. Deposits