.... should provide enough power to continue the circulation and distribution of water efficiently throughout the entire plant. Proof of root pressure is exhibited through a process called guttation. Through guttation, tiny droplets of water are sometimes forced out of some plants. Guttation only works when soil is almost completely saturated with water and leaves are not losing much water through evaporation. When the xylem is full of water, the molecules will not move back down the structure, but rather need to be expelled from the plant. They will move, by the process of osmosis, to an areas where there is the least amount of pressure. .....

.... diseased mind through self experimentation. 1,2 During the late 60s, became popular as a recreational drug. While it has been suggested that recreational use of the drug has dropped, a recent report on CNN claimed that 4.4% of 8th graders have tried it. is considered to be one of, if not the, most potent hallucinogenic drug known. Small doses of (1/2 - 2 ug/kg body weight) result in a number of system wide effects that could be classified into somatic, psychological, cognitive, and perceptual categories. These effects can last between 5 and 14 hours. Table 1: Effects of 1, 2, 3 Somatic Psychological .....

.... as well as higher on mountains. One unusual type grows completely submerged in the cold coastal waters of Antarctica. Some inhabit the Earth's driest deserts, where they grow almost entirely underground and obtain light and moisture through small openings in the ground. Few grow near cities because most cannot survive in industrial air pollution. There are notable exceptions, however: in England, for example, Lecanora conizaeoides is actually confined to areas of high pollution. The body of the lichen, the thallus, has three basic growth forms. These forms are crustose, foliose, and fruticose. Each form is adapted to live under different m .....

.... Americas and its is by far the biggest cat on the continent. The range, which once spanned from the southern states of the USA down to the tip of South America, now centres on the north and central parts of the South American continent. The jaguar is predominantly a forest dweller with the highest population densities centring on the lowland rain forests of the Amazon Basin - dry woodland and grassland also serve as suitable terrain, although the cat is rarely found in areas above 8000 feet. The overall body size and coloration of the cat often relates to its location - found in dense forested areas of the Amazon Basin are often only half .....

.... one of which earned the animal its name: the second toe bore a 5 in hook -shaped, retractable claw that must have been a formidable offensive weapon. Deinonychus is known from fossil remains found in south central Montana during the 1960’s. It was a carnivorous, bird-like creature with characteristics similar to that of a Velociraptor ( one of the stars from Jurassic Park ). This fearsome beast was quite a ravage hunter. The Deinonychus attacked its larger prey in packs and often were successful in doing so because of their menacing claw. By hunting in groups, members of the Deinonychus pack have brought down dinosaurs much lager .....

.... I will examine different cleaners commonly used in my house. I Ajax I go to the cupboard and find a can of the powder, Ajax. The can use to have a piece of tape to cover the top but now it has been lost; a potential problem. The can has an expiration date on it, 9/98. This expiration date may be incorrect because that piece of tape to cover it has been lost for some time now. II Windex In the cupboard in the upstairs bathroom is where we keep the Windex. The Windex is blue and clearly labeled, with no chance of any person mistaking it for something else. The top part is tightly screwed on with Windex filled to ¾ of the o .....

.... temperature might lead to at least partial melting of the polar ice caps and hence a major rise in sea level, along with other severe environmental agitation. An example of a runaway greenhouse effect is Earth's near-twin planetary neighbor Venus. Because of Venus's thick CO2 atmosphere, the planet's cloud-covered surface is hot enough to melt lead. Water vapor is an important "greenhouse" gas. It is a major reason why humid regions experience less cooling at night than do dry regions. However, variations in the atmosphere's CO2 content are what have played a major role in past climatic changes. In recent decades there has been .....

.... effects on energy and agriculture. Also, more recently, escaped Atlantic Salmon from aquaculture cages and their offspring are now competing with the native salmon. How depleted are native salmon and Steelhead populations, what has been done so far to boost the populations and has it been effective, and what can be done with dammed river to allow natural breeding? "Salmon Migration: Decisions, Decisions" no author Environmental News Thursday, "Columbia River Salmon Protection OK'd" no author Environmental News Tuesday, June 30, 1999 "Dam Busting Not Always the Best Decision" no author Thursday, December 31, 1998 "Columbia River Dams .....

.... oxides rise into the atmosphere and are oxidized in clouds to form nitric acid. One of the most serious impacts of acid precipitation is on forests and soils. A lot of damages are being done when the sulphuric acid falls onto the earth as rain. All the nutrients in the soils are washed away making it hard for some plants to grow. The presence of nitrogen oxide and nitric oxide also can force trees to grow even though they do not have the necessary nutrients. The trees are sometimes forced to grow during late autumn when it is actually the time for them to prepare for severe winter weather. One of the direct effects of acid rain is on .....

.... Controversy Continues B. Final Thoughts The Roswell Incident The Roswell Incident, which enlightened our minds to the capacity of excepting all, has remained one of the most controversial issues today. In Roswell, New Mexico, 1947, a strange occurrence arises. An alien craft from outer space crashed in an open field. The issue lay still for almost thirty years, until the thought of a government cover-up arose. Society's opinions have changed over the years. Previous to the 1990's, people have despised the thought of sharing the universe with other intelligent life forms. Now people are interested in this mysterious .....