In the unsaturated zone, not all of the void (pore) space is filled with water. ... On the other hand, capillary forces are dependent on fluid properties, solid properties, and the geometry of the pore space (i.e., holes). ... As a result, water in the unsaturated zone is preferentially drawn into small spaces over large ones, which tend to be occupied by air. ... Rock with significant fractures my slow the travel time of fluids. ...

• Word Count: 696
• Approx Pages: 3
• Has Bibliography
• Grade Level: Undergraduate

In attempting to make sense of the earth's motion, particularly its position in the space (regardless the significance of the term at the time), people have spent uncalculated amount of efforts to make observations throughout the history. ... The argument of whether the Sun revolves around the earth or vice versa, in my humanistic opinion, should remain as a subjective philosophical debate despite the physical evidences of the universe. ...

• Word Count: 620
• Approx Pages: 2
• Grade Level: Undergraduate

The most pressing ecological issue of our time, in my opinion is the global climate change. ... When the sun emits its light energy, the earth absorbs it and warms the earth, this heat is supposed to be reradiated back into space but because of these green houses gases, the heat is trapped on earth, which in turn drastically changes the climate. ...

• Word Count: 696
• Approx Pages: 3
• Has Bibliography
• Grade Level: Undergraduate

My pastor is Dr. ... I went to public school and so does my children, possible all the benefits that we received one day will be non-existing. ... In my eyes it would be wrong for the government to tax churches, temples, mosques and other centers of worship, and the state has an interest in encouraging education through tax exemptions on schools, including those run by religious societies. ...

• Word Count: 2843
• Approx Pages: 11
• Has Bibliography
• Grade Level: Undergraduate