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Search results 15791 - 15800 of 18414 matching essays
- 15791: The Cambrian Period
- ... the metabolic rate of a complex organism. Running down the middle of the North American continent was a large inland sea called the Saulk sea. Inhabiting this sea, and the other seas of the primitive world, were Trilobites and Brachiopods . Trilobites were three - lobed arthropods, unlike other arthropods Trilobites had primitive ,unspecialized appendages. Brachiopods are simple bi- valve shellfish that resemble clams. During the Cambrian corals and chrinoids emerged. Chrinoids are ...
- 15792: Symbolism In The Old Man And T
- ... his decreasing strength. For instance, when he needed strength on his long and strenuous voyage he thought of his dreams of the lions, and of them playing on the beach without a care in the world. With this in his mind it seemed to make him stronger and gave him the endurance to continue. The lions could also symbolize pride. Like the lions Santiago had pride. He was proud of his ...
- 15793: Spiders
- ... Related forms such as funnel-web spiders and trap door spiders are also often called tarantulas. The name came from a smaller wolf spider of Europe but was then applied by explorers of the New World to the giant spiders that they encountered. No North American species has a venom that is dangerous to humans, but tarantula body hairs may induce an allergic reaction. Tarantulas can give you a painful bite ...
- 15794: The Siberian Tiger
- ... Males and females are only together during mating season. Females will only stay with their litter of two or three cubs for less than two years. The Siberian Tiger is the largest cat in the world today. It measures thirteen feet long and weighs in at seven hundred pounds. It's cousin, the Bengal Tiger, is only seventy five percent it's size. The Siberian Tiger's thick coat is normally ...
- 15795: Acid Rain
- ... officials called it the most pressing environmental issue facing the nation. But it is important to bear in mind that acid rain is only one segment, of the widespread pollution of the atmosphere facing the world. Each year the global atmosphere is on the receiving end of 20 billion tons of carbon dioxide, 130 million tons of suffer dioxide, 97 million tons of hydrocarbons, 53 million tons of nitrogen oxides, more ...
- 15796: Predator - Prey Relationships
- ... mechanisms available in order to protect themselves from predators. So, predators now face tougher prey, so they undergo evolution in order to stay successful. This completes the cycle and leads to a diverse and interesting world. References Adler, T. 1996. Fish Blend Quickly into the Background. Science News, 149:133. Adler, T. 1996. How Bad-Tasting Species Got their Markings. Science News, 160:118. Alcock, John. 1975. Animal Behavior. Sunderland, Sinauer ...
- 15797: PCR And Its Use
- ... PCR or a PCR machine. You had to do things by hand and that really added to the cost of research. In effect, not as many people heard about what was going on in the world of DNA. People should be educated about DNA because if you know about DNA it can be useful if you are ever called to jury duty and they are using that kind of evidence. You ...
- 15798: Facts about Orthoptera
- ... plagues have been recorded since the beginning of history and are still one of the worlds major insect problems. Cockroaches are in this group too. Their are an estimated 3,000 cockroach species in the world. About 55 live in the U.S., and only 4 species ar common household pets. German cockroaches or Croton bugs, are common in the U.S. especially in the northern states. They commonly enter the ...
- 15799: New Developments or Research in Genetic Cloning: Summary
- ... are discussed because they all have one thing in common: they may be beneficial to human beings later on. For example, the newest entry in my paper, and perhaps the one that shocked the whole world, was the report about the first successful clone mammal from non-embryonic cells. This will be helpful in the future for patients waiting for organ transplants. Scientists will be able to clone a fully functional ...
- 15800: Transitions of Reptiles to Mammals
- Transitions of Reptiles to Mammals A long long time ago, in a galaxy not too far away, was a little blue planet called Earth, and on this world not a single mammal lived. However a lot of time has past since then and we now have lots of furry creatures that are collectively called mammals. How did they get their? Where did they ...
Search results 15791 - 15800 of 18414 matching essays
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