the circulation of carbon atoms in the biosphere as a result of photosynthetic conversion of carbon dioxide into complex organic compounds by plants, which are consumed by other organisms: the carbon returns to the atmosphere in the form of carbon dioxide
Plants are responsible for incredible feats of molecular transformation. Plant processes, such as photosynthesis, photophosphorylation, chemiosmosis, carbon fixing reactions, respiration, are presented in this tutorial...
Photosynthesis is the process that plants undertake to create organic materials from carbon dioxide and water, with the help of sunlight- all of which are investigated in this tutorial...
The body is comprised of different elements with hydrogen, oxygen, carbon, and nitrogen as the major four. This tutorial will help you understand the chemical composition of the body. This will come in handy when considering the various interactions between cells and structures. ..
Cell respiration is the process of creating ATP. It is "respiration" because it utilizes oxygen. Know the different stages of cell respiration in this tutorial...
Plants and animals need elements, such as nitrogen, phosphorus, potassium, and magnesium for proper growth and development. Certain chemicals though can halt growth, e.g. herbicides in plants, or affect normal physiological activities, e.g. alcohol. For more info, read this tutorial on the effects of chemicals on plants and animals...
The human respiratory system is an efficient system of inspiring and expiring respiratory gases. This tutorial provides details of the different parts and functions of the respiratory system...