… refers to all the ways that human activity harms the natural environment. It is one of the most serious problems facing humanity and other life forms today. Thick, brown haze wraps around cities. Unwanted tires, appliances and other refuse float in…

… a call informing him or her that a fire has broken out in the forest. Should the ranger call the fire department to come extinguish the fire immediately, or should the ranger allow the fire to burn itself out? This question has been the topic of…

… and their environment. Biosphere= the portion of earth that supports life. Abiotic factors= non-living parts of the environment Biotic factors= living parts of the environment Levels of Organization in Ecology: 1. organism (one thing) 2. population…

… a complicated issue, and one which many people have strong feelings about. There are some reasons why cars should be banned. Firstly, it would reduce pollution greatly, which is especially important since town centres always consist of tall buildings…

… of a large class of marine invertebrates characterized by a protective calcium carbonate or horny skeleton." This is how the Microsoft Encarta Encyclopedia described coral. This calcium carbonate or horny skeleton is also called coral. Coral may look…

… in soil or rock, or dissolved in water in our rivers or groundwater". Salt naturally occurs in many parts of Australia's Landscape. It has been in the soil since well before farming began. Most of the salt is sodium chloride (NaCl), which is table…

… and geological changes that have affected it's vegetation and native fauna. Australia has been isolated from other continents for 45 million years. This isolation resulted in many unique plants and animals evolving. Over this time Australia has…

… They are very easy to replace, and last around 10-15 years at top condition, showing signs of aging at around the first 15 years. Seawalls are used for protection because it stops erosion of one particular area. It is also used to protect other people's…

… of angels. Good angels and bad angels. Not everyone has heard of the destroying angel. The destroying angel mushroom is beautifully white, with long slender stalks and elegant caps. The deadly Amanitas or destroying angel mushroom are noted for the…

… on energy efficiency and consumption over the past thirty years it could be argued that that these campaigns have been initiated due to 'knee jerk' reactions from political events of the day. There had been no pre-planning or thought given to…