… categories in which there are subcategories. The first one is air pollution (covers acid rain, global warming and Ozone break down), the second one is water pollution (waste dumping, eutrophication and over fishing), and the last is land pollution…

… harmful effects to the environment. Acid Rain is produced when coal, oil and gas are burned; they generate sulfur dioxide, nitric oxide and nitrous dioxide that rise into the atmosphere. The oxides then go through chemical reactions and the end…

… occur in the thylakoid membrane within the chloroplast. The first, and most complex cycle is the non-cyclic. It begins with an H20 molecule splitting into 2H+ and ½ O2 in the process of photolysis. (During photolysis oxygen is released…

… and not merely the absence of disease Disease-condition that disturbs, or has the potential to disturb the bodies functions Infectious disease-caused by a pathogen Non-infectious disease-caused by a malfunction of the body Contagious-easily spread …

… has 1,000,000,000,000 nerve cells (neurons) that process information. Neurons receive information from other cells through networks called dendrites. Then the neurons send the information in electrical impulses to other nerves. Then the message is passed…

… of defining the terms 'health' and 'diseases': Health is hard to define because it incorporates many things and some can be very subjective. Such as, biological, psychological and social well-being. Disease is similarly difficult to define because…

… Started modern science of paleoanthropology (Study of Human Origins) Louis and Mary Leakey found fossils in Tanzania and Kenya that indicated man's evolution began in East Africa 2 million years ago, far earlier than was believed at the time of…

… Most bony fish belong to the group of ray-finned fish called Teleostei. Most food, sport and aquarium fish belong to this group. About 30000 species and sub-species are known. Habitat Bony fish occur in seawater, fresh and estuaries. External charac…

… written in the Sunday Times by Dr. Wolfe Segal, Senior lecturer in Biochemistry, University of W.A called 'Milk Is Full Of Food Value', discuses the facts about milk. Dr. Wolfe Segal wrote what vitamins and minerals are in milk also how many grams…

… in 1938. He noticed some common physical features in some of his female patients. It wasn't until 1960 that a chromosomal abnormality was found in people with the physical features that Dr. Turner described. Turner Syndrome only affects females…