Cause and Effect The Effects of Global Warming Global warming is one of the greatest threats to humanity and to the environment. Global average temperature rose significantly during the past century. The current scientific view is that most of the temperature increases since mid-20th century has been caused by increases in atmospheric greenhouse gas concentrations produced by human activity. Most scientists agree that planet’s temperature has risen 0.5 degree Celsius since 1900 and will continue
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greatly in size‚ making it easy to assume that the larger the asteroid‚ the larger the crater. While this is partially true‚ it is not the only factor that controls crater size. This experiment will be exploring the asteroids speed and how this effects a craters size. Aim This scientific experiment was conducted to find how the impact speed/energy of an asteroid affects the diameter/size of a crater. Method A golf ball was dropped into a bucket of sand from heights ranging between 1-5 meters
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The effects of caffeine on the heart rates of Daphnia. Introduction In the water flea‚ Daphnia‚ the single‚ small heart is easily visible when viewed under a low power microscope. The heart rate can be monitored and measured in different conditions‚ such as change in water temperature‚ or in this case‚ the concentration of chemicals added to the water they habitat. A change in daphnia heart rate under the influence of a concentration of caffeine solution creates a procedure providing an interesting
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The Effects on Enzymes By Bailey Rose The Effects on Enzymes Bailey Rose 10/31/2011 Abstract In this lab exercise‚ the study of enzyme catalase‚ we viewed the breakdown of hydrogen peroxide into water and oxygen. The purpose was to isolate catalase from starch and measure the rate of activity under different conditions. Changes in temperature and pH along with Substrate Concentration and Enzyme Concentration were the conditions tested in the experiment. Our class performed
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Greenhouse Effect The Greenhouse effect is a natural process that is imperative for our survival‚ warming the Earth’s surface. The sun emits energy that reaches the Earth’s atmosphere‚ some of it is reflected back to space whilst the rest is absorbed and re-radiated by greenhouse gases such as carbon dioxide‚ methane‚ water vapour‚ nitrous oxide‚ ozone and chlorofluorocarbons (CFCs’). The energy that is absorbed warms the atmosphere and the Earth’s surface maintaining a temperature of 33 degrees
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Introduction A rocket is a cylindrical projectile that can be boosted to a distinct height or distance by the combustion of its contents and is frequently utilised as a firework or signal. However‚ this term can also refer to a rocket engine. Similarly‚ to most engines‚ rockets burn fuel‚ which then turns into hot gas. The engine then pushes the gas out the rocket’s back‚ allowing the projectile to move forward. It is important to investigate how to successfully launch rockets to serve for different
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According to the data‚ type B pencil had the highest resistance and type 11B pencil had the lowest resistance. B type pencils are darker than H type pencils. For B type pencils‚ the pencils get softer as its number increases. For example‚ a 6B pencil is softer than a 4B pencil. It was evident from the data that softer pencils have a lower resistance. For instance‚ the average resistance for a one centimeter line for a B type pencil was 0.275 MΩ‚ but for a 11B type pencil the average resistance decreased
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increases the temperature. This hurts many people‚ animals‚ and plants. The greenhouse effect is when the temperature rises because the sun’s heat and light is trapped in the earth’s atmosphere. This is like when heat is trapped in a car. On a very hot day‚ the car gets hotter when it is out in the parking lot. This is because the heat and light from the sun can get into the car‚ by going through the windows‚ but it can’t get back out. This is what the greenhouse effect does to the
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Global warming is the observed increase in the average temperature of the Earth ’s near-surface air and oceans in recent decades and its projected continuation. Global warming poses an extraordinary challenge. The world ’s leading atmospheric scientists tell us that a gradual warming of our climate is underway and will continue. This long-term warming trend poses serious risks to our economy and our environment. It poses even greater risks to many other nations‚ particularly poorer countries that
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halted the hallucinations. Serotonin 2A receptors have their primary effect of “5th level” pyramidal neurons‚ which act as inhibitors
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