Factors Affecting Population Growth 69Notes D. The logistic growth equation is a mathematical representation of Malthus'idea of population growth and environmental resistance.E. Concept of Chapman (1931)1.
The Earth's oceans contain a large amount of CO2 in the form of bicarbonate and carbonate ions â much more than the amount in the atmosphere. The bicarbonate is produced in reactions between rock, water, and carbon dioxide.
18.6% of body mass is carbon. Carbon takes many forms, including charcoal, graphite, and diamond. Dave King / Getty Images Carbon is found in every organic molecule in the body. Carbon is ingested in food the food we eat and in the air we breathe. Carbon accounts for 18.6% of the total mass of the human body. We even expel carbon as a waste product when we exhale in the form of carbon dioxide.