The Effect of Varying Dosages of Gamma Radiation on the Growth of Corn (Zea mays L.)1 Montalbo‚ Josephine M. A- 1L September 7‚ 2013 1 A scientific paper submitted in partial fulfillment of the requirements in Genetics laboratory under Prof. Cheryl D. Agdaca‚ 1st semester‚ A.Y. 2013-2014. ABSTRACT Exposure of corn plants to ionizing radiation such as gamma radiation can induce mutation. The purpose of this study was to
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due to human activity is not occurring. Global warming is the increase of the average temperature of the Earth’s surface and has become a controversial and complicated issue facing scientists and politicians today. Many scientists and writers point to human activity being the main contributor to global warming. I disagree with the statement that global warming is not occurring and believe that global warming‚ due to human activity is actually occurring. • Human activities have led to
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of wiping out some species‚ if we have not already done so. For millions of years‚ extinction among animals was а natural process. In fact‚ it was part of the process of evolution. In recent years‚ however‚ the extinction of some species has been the result of human activities. Had it not been for these‚ many more animals would have survived. Some species have either been made extinct‚ or become endangered‚ because of hunting. Now‚ even the very earliest of humans were hunters‚ since
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What is it?Lactobacillus is a type of bacteria. There are lots of different species of lactobacillus. These are "friendly" bacteria that normally live in our digestive‚ urinary‚ and genital systems without causing disease. Lactobacillus is also in some fermented foods like yogurt and in dietary supplements.Lactobacillus is used for treating and preventing diarrhea‚ including infectious types such as rotaviral diarrhea in children and traveler’s diarrhea. It is also used to prevent and treat diarrhea
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ENDANGERED SPECIES Introduction An endangered species is a population of organisms which is at risk of becoming extinct because it is either few in numbers‚ or threatened by changing environmental or predation parameters. The International Union for Conservation of Nature (IUCN) has calculated the percentage of endangered species as 40 percent of all organisms based on the sample of species that have been evaluated through 2006.Many nations have laws offering protection to
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A keystone species is a species that has a disproportionate effect on its environment relative to its abundance. Such an organism plays a role in its ecosystem that is analogous to the role of a keystone in an arch. While the keystone feels the least pressure of any of the stones in an arch‚ the arch still collapses without it. Similarly‚ an ecosystem may experience a dramatic shift if a keystone species is removed‚ even though that species was a small part of the ecosystem by measures of biomass
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An endangered species is a population of organisms‚ which is facing high risk of becoming extinct because it is either few in numbers‚ or threatened by changing environmental or predation parameters. There are a lot of endangered species in the world right now. They are moving towards being extinct slowly. In fact‚ since a species is not declared extinct until years have gone by since it was last spotted. Tigers are among the animals that are endangered in Asia. The tiger is native to Asia
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Invasive Species Threatens the Ecosystem Every life form all over the world depends on the ecosystem for its survival. However‚ the ecosystem can be threatened when there is an excess or drop in resources. Many people will argue that human beings are the primary cause of this economic imbalance‚ but are people the root of this problem? No. There is evidence that many invasive species all over the world has also threatened the ecosystem. All organisms have the potential to become invasive
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Many believe that humans are the perfect species. Many believe that no other species in the universe can compare to the intellect and emotional stability of humans. Although this is the popular belief for the majority of the public‚ many philosophers say this is not the case. Humans are far from perfect and various authors and journalists‚ directors and philosophers exemplify how humans are flawed daily through their works. Alexandre Dumas and Homer are two particular authors/philosophers that not
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Identification: Corn snakes are a relatively small and slender species. Corn snakes have a very vibrant colouration consisting of bright oranges‚ orangey-reds and reddish-browns. Their base colour is usually an orange to reddish-brown colour with a variety of different patters across the entirety of its body. Herpetologists at the North Carolina Museum of Natural Sciences‚ described corn snakes scale and colour patterns as "dark-margined red or brown mid-dorsal blotches and smaller lateral blotches
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