... winters are long, the growth gets underway, it progresses rapidly. "Flowers are vividly colored and last longer than in the western or Midwestern sections do to a predominance of favorable days and cool nights" (Givens 11,13). What is a wildflower? "A wild flower is a plant that has always been it's own without any human intervention." Native plants "without assistance from a gardener in the area where they originated. Although all native plants are wild, not all wildflowers are natives" (Loewer 6). Where did the non-native flowers come from and how did they get here? "Probably the largest number of plants ...

... space that the Mercury modules provided. All who met these requirements were also required to undergo numerous intense physical and psychological evaluations. Finally, out of a field of 500 people who met the experience, training, and height requirements, NASA selected seven to become U.S. astronauts. There names, Lieutenant M. Scott Carpenter; Air Force Captains L. Gordon Cooper, Jr., Virgil “ Gus� Grissom, and Donald K. “Deke� Slayton; Marine Lieutenant Colonel John H. Glenn, Jr.; and Navy Lieutenant commanders Walter M. Schirra, Jr., and Alan B. Shepard, Jr. Of these, all flew in Project Mercury except ...

... inoculate an open wound. Then, the spores germinate and invade the blood stream, leading to death within 48 hours. Bacillus Anthracis is classified as a harmful, pathogenic bacterium. There is a vaccine for Anthrax in humans, but it produces no significant immunity. The vaccine is given primarily to people who work with livestock or in other businesses where workers must handle animal carcasses. The livestock version of the vaccine is very effective, however. The vaccine for both animals and humans is composed of sublethal amounts of toxin that induce formation of protective antibody. Frequent boosters are necessary ...

... problems would be minimized, and significant benefits would result for farmers and society as a whole. IPM coordinates economically and environmentally acceptable methods of pest control with judicious and minimal use of toxic pesticides. IPM programs assess local conditions, including climate, crop characteristics, the biology of the pest species, and soil quality, to determine the best method of pest control. Tactics employed include better tillage to prevent soil erosion and introduction of beneficial insects that eat harmful species. Many pests that are attached to crop residues can be eliminated by plowi ...

... a chemical energy. Fuel can take the form of gases, solids or liquids. When fuels combine with oxygen from the air, they release their stored energy as heat. We recognize this process as burning. The individual relies on food for fuel which contains energy-giving substances that our bodies can store until we need this energy to use our muscles. When we do use our muscles within us, we may not always be sure that heat is given off. Our bodies do not burst into flames but the perspiration on our skin is a clue to what is happening. The movement of the windsurfer has a different explanation. The windsu ...

... stars collapse, they start rotating and as they are spinning, their gravity becomes stronger causing them to shrink. As the object becomes smaller, it starts spinning faster and faster. Then the core compacts into a mathematical point with virtually zero volume, where it is said to have infinite density. This is referred to as a singularity. When this happens, escape would require a velocity greater than the speed of light. No object can reach the speed of light. The distance from the black hole at which the escape velocity is just equal to the speed of light is called the event horizon. Anything, including light ...

... or reverse the threat of environmental pollution. Even though people are trying to help this problem time can’t be turned back and much damaged has already occur. Air Pollution Factories and transportation (like cars or planes) depend on huge amounts of fuel every year. When these fuels burn they introduce smoke and other, less visible, by-products into the atmosphere. Although wind and rain occasionally wash away the smoke given off by power plants and cars, the cumulative effect of air pollution poses a grave threat to humans and the environment. In many places smoke from factories and cars combines with natur ...

... on the length and position of the crystal axes. Crystal axes are imaginary lines passing through the center of the crystals. Minerals in each system share certain proportions and crystal form and many important optical properties. The six crystal systems are very important to a mineralogists and geologists; specification of the system is necessary in the description of each crystal system. Isometric This system comprises crystals with three axes, all perpendicular to one another and all have equal length. Tetragonal This system comprises crystals with three axes, all perpendicular to one another; b ...

... or a species of its alleles (alternative genes) and their effects on the form, or phenotype, of organisms that make up that population or species. Another way to state the difference is that macroevolution is between-species evolution of genes and microevolution is within-species evolution of genes. There are various kinds of dynamics of macroevolution. Punctuated equilibrium theory proposes that once species have originated, and adapted to the new ecological niches in which they find themselves, they tend to stay pretty much as they are for the rest of their existence. Phyletic gradualism suggests that species ...

... law to do so. In addition to seat belts, motor vehicles are equipped with air bags, an automatic form of protection designed to reduce the risk of injury. In the past decade, air bags have saved the lives of close to 3,000 people. The National Highway Traffic Safety Administration (NHTSA) conducted a study of real-world motor vehicle crashes and were able to conclude that the combination of seat belts and air bags is 75% effective in preventing serious head injuries and 66% effective in preventing serious chest injuries. Unfortunately for about 100 people in the past decade, their lives were saved at the expense ...