.... monotremes, produce live young that undergo the early stages of development within the body cavity of the mother. Some mammals are helpless at birth, others are able to walk and even run immediately, and may be born fully furred and with their eyes and earsopen. The largest mammal, the blue whale, Often exceeds 30 m (100 ft) in length, and the smallest shrews, mice, and bats are often less than 5 cm (less than 2 in) in length. In many mammals the color of the skin or fur blends with the animal’s natural surroundings. In others there is great contrast with the natural surroundings to favorvisual signals that provide information about theidentity of .....

.... is also endangering monarchs. Milkweed relies on the monarch to pollinate it so that it can reproduce. The life cycle of a monarch revolves around the Butterfly weed plant. First the monarch lays its egg on the leaf of the plant. Once the Caterpillar is born it eats the leaf for nutrition. The Monarch caterpillar is striped black and yellow. As it grows and becomes ready to become a chrysalis by forming a cocoon it uses the plant again. The caterpillar forms its cocoon on the Butterfly Weed. By the time the caterpillar is ready to become a chrysalis it has grown to be about 45 millimeters in length. The chrysalis is pale green and spotted with gold. It becomes .....

.... facility at the Cosmodrome to prepare for work on the Mir space station. We couldn't give up the hope of peace and freedom. Launch Day had arrived; June 29, 1995. During launch and ascent, there wasn't much to think about except the thrill of the ride. Then the tension rose. In less than thirty-six hours, they would have to close a gap of four thousand miles at an altitude of 245 miles while traveling at 17,500 miles per hour, only to have to move within three inches and two degrees of a quickly moving, very fragile object in space. One small thrust of a poorly aligned engine could cost one of four space-worthy shuttles and the world's first and only long-te .....

.... travel, in the form of a new department, dubbed the Breakthrough Propulsion Physics Program. It’s director, Marc Millis, has devoted countless hours to making the department practical and efficient. He has even crafted their web page himself. Recently on his “Warp Drive, When?” Web site Millis (a scientist, and leader of NASA’s Breakthrough Physics Propulsion lab) said, "The ideal interstellar propulsion system would be one that could get you to other stars as quickly and comfortably as envisioned in science fiction. Before this can become a reality, three scientific breakthroughs are needed: discovery of a means to exceed light speed, discovery of a mean .....

.... the diatomic molecule, which makes up 20.95% of the volume of dry air. Diatomic oxygen is colorless, odorless, and tasteless. Two 18th-century scientists share the credit for first isolating elemental oxygen: Joseph PRIESTLEY (1733-1804), an English clergyman who was employed as a literary companion to Lord Shelburne at the time of his most significant experimental work, and Carl Wilhelm SCHEELE (1742-86), a Swedish pharmacist and chemist. It is generally believed that Scheele was the first to isolate oxygen, but that Priestley, who independently achieved the isolation of oxygen somewhat later, was the first to publicly announce his findings. The interpretatio .....

.... lake with a pH of 5, and a lake with a pH of 3 is 100 times as acidic, After many rain falls of Acid rain, the pH of a normal lake ( 5.8 ) to 4. Acid Rain has been known to reach the acidicy of pH 2, ( battery acid has a pH if 1 ) this is a drastic change, as normal rain is average pH 5.2. Acid Rain can dissolve limestone and chalk, and corrodes outdoor structures. Statues and monuments that are left unprotected can fall victim to the unpredjudiced destruction of acid rain. Acid Rain reacts to different types of soil and rocks in two ways. 1) Acid rain will dissolve alkaline rocks and soil, or will neutralize the alkalinity. 2) Acid rain will increase th .....

.... orders of magnitude by doping. Semiconductors have electrical resistivities between 10-5 and 107 ohms. Semiconductors can be crystalline or amorphous. Elemental semiconductors are simple-element semiconductor materials such as silicon or germanium. Silicon is the most common semiconductor material used today. It is used for diodes, transistors, integrated circuits, memories, infrared detection and lenses, light-emitting diodes (LED), photosensors, strain gages, solar cells, charge transfer devices, radiation detectors and a variety of other devices. Silicon belongs to the group IV in the periodic table. It is a grey brittle material with a diamo .....

.... the evidence presented clarifies where they stand. Among the list of evidence provided is that the sexual orientation of a male is influenced by heredity due to the fact that “it directly examines the genetic information, DNA.” Furthermore, if there is a gene that influences an individual's sexual orientation, there is a great possibility of that trait being passed down from generation to generation. Experiments conducted led to the possible conclusion that the region Xq28 carries a gene influencing male sexual orientation. However, there are a few flaws to their interpretation of the results. Among them are stated in the article. A replication of the expe .....