They are produced in all living organisms and control all the chemical reactions that occur. Most of the chemical reactions that occur in living organisms would occur too slowly without enzymes. ... Catalase is a very fast reacting enzyme; it is found in many living cells, it breaks down hydrogen peroxide to water and oxygen. ... Hydrogen peroxide is a problem for all living cells as it is a by product of a number of chemical reactions that take place in each cell. ... The effects of the experiment are illustrated below: Hydrogen peroxide water + oxygen 2H2O (aq) 2H2O (l) + O2 (g) If the ...

• Word Count: 1867
• Approx Pages: 7
• Grade Level: High School

They are produced in all living organisms and control all the chemical reactions that occur. Most of the chemical reactions that occur in living organisms would occur too slowly without enzymes. ... Catalase is a very fast reacting enzyme; it is found in many living cells, it breaks down hydrogen peroxide to water and oxygen. ... Hydrogen peroxide is a problem for all living cells as it is a by product of a number of chemical reactions that take place in each cell. ... The effects of the experiment are illustrated below: Hydrogen peroxide - water + oxygen 2H2O (aq) - 2H2O (l) + O2 (g) If th...

• Word Count: 1786
• Approx Pages: 7
• Grade Level: High School

A qanaat is a tunnel that starts at the foothill of a mountain, just below the water table, and gradually slopes downhill, to supply water to a near by city (McDonald, 1998). ... Roman engineers built the main part of their aqueduct system at or below ground level. ... "The main aqueducts under New York are between 200 and 600 feet below sea level" (Funk & Wagnalls, 1983). ... We would still be trapped living next to rivers and lakes. ...

• Word Count: 1391
• Approx Pages: 6
• Grade Level: High School

Pure, fresh water is pumped down through this space to the salt vein below. ... Every living thing-plants, animals, and man-must have water to live. In fact, every living thing consists mostly of water. ...

• Word Count: 1334
• Approx Pages: 5
• Grade Level: High School

They are among the most primitive frogs living today, they are unique in that they seldom enter water, have little or no webbing between their toes and lack a free swimming tadpole stage and the males brood the eggs. ... All living things are interconnected and interdependent. ... • Vegetation and the hydrological / carbon cycle - Transpiration by trees and vegetation is an important part of the hydrological cycle as shown in figure 1 below. ...

• Word Count: 1615
• Approx Pages: 6
• Has Bibliography

Research teams in 2003 tested samples of ice from 3,200 meters below Vostok Station, they found diverse colonies of microbes. ... Research also indicates that the organisms living in Lake Vostok may have had special evolutionary procedures in order for them to adapt in such an oxygen encumbered environment. ... "Geological Processes make it much more likely that thermal energy and minerals are coming up from below," says Robin Bell. ...

• Word Count: 2395
• Approx Pages: 10
• Has Bibliography

As a result of dams, channels below the dam have been dramatically altered. ... The dams cause silt build up in the dam and in the streams below. ... Dams were built to control one aspect of an environment that would otherwise make living difficult or even impossible. ...

• Word Count: 2248
• Approx Pages: 9
• Grade Level: High School

Around eighty percent of the Yemeni population are just above or below the poverty line. ... In an article written on Hub Pages, a reference written by Liz Sonneborn states that, "In 2006, an estimated eight million Yemen citizens were living on the equivalent of less than $2 a day" (Sonneborn, 2012). ...

• Word Count: 1638
• Approx Pages: 7
• Grade Level: Undergraduate