Biomass – A biomass fuel is an energy source derived from living organisms.
Photosynthesis. The leaves of plants convert carbon dioxide, water, and nutrient chemicals into plant food via a process called photosynthesis. Without this process, there would be little or no life on the planet.
Bio-productivity (biological productivity)is a term used to describe the measurement of the biologic production per hectare per annum.
Bio-capacity (biological capacity) is a term used to describe the total usable biological production capacity in a given year of a biologically productive area, such as within a country.
Earth system science (Gaia Hypothesis) is a term used to describe science that studies the whole Earth as a system of many interacting parts and focuses on the changes within and between these.