IB ESS SL 2.1.21 Ecosystem Sustainability Question Bank

trees are the main producer/way in which energy enters the ecosystem; there is a variety of nutrient and energy pathways / allows for varied food webs;
tree layers create a variety of habitats so increasing the diversity of species; trees protect each other from high winds; trees protect the soil from heavy precipitation/erosion; interdependence of species means if the main plant types are gone then many other organisms cannot survive there either; increased genetic diversity allows species to adapt to change; the roots hold the soil together keeping the nutrient cycle going; no trees increases the risk of soil erosion and loss of nutrients and a downward spiral of degradation and instability;