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.
The Scientific method is a term used to describe the discovering scientific principles by formulating hypotheses, making predictions from them, and testing the predictions.
The Precautionary Principle is a guiding framework for decision-making that anticipates how our actions will affect the environment and health of future generations. The precautionary principle and its application to environmental hazards and their uncertainties began to emerge as an explicit and coherent concept within environmental science
Thermodynamics is a term used to describe the set of natural laws that govern the transfer of energy from one body to another. Thermodynamics (comes from Greek “therme”, heat and dynamics, power) control behaviour of energy as it moves in and out of the Earth system, and among its reservoirs.
The troposphere is the region of the lower atmosphere up to a height of about 10 km where the temperature falls with height and where convection is the dominant process for the transfer of heat in the vertical
Water scarcity is a term used to describe a country or region where the annual renewable water supplies are below 1000 m3 per person.