Continental tropical (cT) air masses are hot, dry, unstable at low levels and generally stable aloft (upper-level ridge); they originate in northern Mexico. Continental polar (cP) or continental arctic (cA) air masses are cold, dry, and stable originating over northern Canada and Alaska as a result of radiational cooling. (Oklahoma Climatological Survey, 2004)" The greenhouse effect has been in the news for the last several decades especially with the resulting

Earth hour will soon be in its sixth year. We are celebrating this event by becoming involved in the environmental movement. The hospitality industry has a special part to play in keeping the earth clean and habitable. After all, tourism and travel are some of the most common of human experiences. What is sustainability? What I mean to say is that sustainability is a way of life. It is not just recycling,

Earth Liberation Front (ELF) This is a case study on Earth Liberation Front (ELF), which is an extremist group emerged to protect the Mother Nature. ELF's origin, structure, leadership, motivations, and goals have been included as the primary elements of analysis in the case study. These aspects have come under analysis to provide an understanding about the group. Since this group is also considered as one of the terrorist groups

Readers know that Maria is very religious, and that she prays often and cooks for the family. On page 7 readers learn that in her haste to keep the Catholic ritual of crossing herself, she mixes cooking and religion. "She breathed a prayer and crossed her forehead. The flour left white stains on her, the four points of the cross." Her life is not at all about her, but

The carbon cycle refers to the movement of carbon in its many forms between the oceans, atmosphere, biosphere, and geosphere. This movement is essential because it ensures that earth is able to sustain life. All living organism found on earth needs carbon for either energy, structure, or in the case of humans for both. In the atmosphere, carbon exists in different forms. Carbon dioxide and methane are mostly responsible for

This physiological process allows plants to make their own food. Being able to make their own food through the process of photosynthesis, plants, unlike animals, no longer need to feed on other organisms in order to exist and survive. And since sunlight is required for this essential physiological process to occur, sunlight therefore makes the plants stronger. Through the physiological process of photosynthesis, plants are able to release oxygen, the