... and in some areas it's getting worse. Many of the industrial sources that create the bulk of ozone-forming pollution are in violation of the law. Or consider water. In early September over 1,000 people drank contaminated water at a county fair in upstate New York. Two died and 65 others were hospitalized. If you think this couldn't happen to you, think again. A recent federal audit found that nearly 90 percent of all violations of the Safe Drinking Water Act go unreported. Some of those violations are harmless data-entry errors, but they also include potentially lethal problems such as contamination with pestic ...

... also threaten human health, and harm birds, fish, and many types of ecosystems." The threat to human health is due to local climate. The reason why local climate threatens human health is that "extreme temperatures can directly cause the loss of life". And also many serious diseases appear in warm places. But not only is it that "warm temperatures can increase air and water pollution, which in turn harm human health" (ESP Health 1). The hot temperature, which could be the most direct effect of climate change, causes the heat problem. Because their cardiovascular system has to work harder to keep the body cool ...

... oxygen, nitrogen, and carbon, together consists 99.5 % of all matters. In fact, the percentage of essential elements of life -- C, N, O, H, P, and S -- are quite similar from individuals to individuals. Energy wise, the Earth had plenty from a variey of sources Radiation: from the cosmic and radioactive isotope decays UV light: there were no protective ozone layer and thus immense heat. Electrical discharge from the never ending lightning caused chemical reactions to occur very often and there was also another source of heat from the young earth crust which was volcanically active. For most chemical reacti ...

... the variability of parasite-host interactions by synthesizing spatial (transmission) and temporal (evolutionary) factors is examined. Lenski and May (1994) and Antia et al. (1993) predict the modulation of virulence in parasite-host systems by integrating evolutionary and transmissibility factors. INTRODUCTION Why do certain parasites exhibit high levels of virulence within their host populations while others exhibit low virulence? The two prime factors most frequently cited (Esch and Fernandez 1993, Toft et al. 1991) are evolutionary history and mode of transmission. Incongruently evol ...

... White notes that energy is as concrete as salmon, human bodies, and the Grand Coulee Dam. White wants his readers to think about nature and its relationship with humanity. White explains how the river is energy. The Columbia River works as gravity pulls it to the Pacific Ocean. The Columbia is continuously cutting into the terrain that it flows through. Over millions of years water rushed through the Columbia Basin to form the Columbia River. Water carries soil, silt, and debris downstream. The constant movement of material in the river cuts and shapes the river basin into the land. This movement is a slow ...

... is Tigris Altaica. The Siberian Tiger is a mobile creature and it lives in northern Asia and is found as for north as the Arctic Circle. It's territory is more than four thousand square miles and it will keep that territory indefinitely, as long as the food supply lasts. The Siberian Tiger hunts very much but only about one tenth of the hunts are successful. It requires more than twenty pounds of meat per day. It is heterotrophic and it's diet consists mainly of deer, boar, bear and fish. The Siberian Tiger is a solitary animal. Males and females are only together during mating season. Females ...

... toxic, environmentally friendly way of controlling the pests that impact on agriculture. They are the best ways to boost agricultural output and still save the environment. The U.S. could have been using biotechnology as early as the late 1800's. USDA entomologist C.V. Riley was quoted in an article written by Sean Adams for Agricultural Research. Adams uses Riley’s quote from 1882 saying that the evidence for the use of natural enemies and parasites to control pests is sufficient to support their use. (16). Even so, pesticides have been used for centuries. In James Whorton’s book, Before Silent Spring, ...

... Peter Gorrie writes that Canada uses "an estimated 1.5 billion cubic meters of [water] each year", (Gorrie 71). And while Canadians are for the most part are unaware of how much water they consume, they are even less aware of its presence around them. For water is an immense natural resource that rests not only around Canadians, but beneath their feet as well. In no region is this more pervasive than in the province of Ontario. Ontarians walk above groundwater supplies everyday, without the slightest notion of the extent to which they rely on this over-used and exploited natural resource. Canada as a whole "has ...

... melanogaster has a life cycle of four specific stages. The first stage is the egg, which is about . 5mm long. In the 24 hours when the fly is in the egg stage, numerous cleavage nuclei form. Next, the egg hatches to reveal the larva. During this stage, growth and molting occur. Once growth is complete, the Drosophila enter the pupal stage, where it develops into an adult through metamorphosis. Upon reaching adulthood, the flies are ready to mate and produce the next generation of Drosophila melanogaster. During this experiment, monohybrid and dihybrid crosses were conducted with Drosophila melanogaster. O ...

... There are, however, certain similarities among ADHD children. ADHD was described as early as 1845 by the German physician Henrich Hoffman in his classic Der Struwelpeter (Slovenly Peter), a collection of humorous moral tales for children. The heroes were taken from his observations of children. In 1902, Dr. G. F. Still, described the behavior of a group of hyperactive children. He knew of no medical reasons for their behavior and made no mention of their educational needs or social skills. He said that part of the problem with ADHD children was "deficient training in the home." In 1923, resea ...