Food Safety, Urban Sprawl, & Land Use Issues (01)In the United States, we are fortunate to have an abundant supply of food, and much of this is due to our agricultural technology. However, there are many concerns about our food source, including genetically modified crops, the use of more chemicals, and climate change just name a few. Give examples of how humans have increased their food supply and what effects these

Salmon River Ecosystem Earthworms are the most tolerant and crawfish are the least tolerant of pollutions and reduced dissolved oxygen. The loss of riparian areas from livestock grazing reduces the capacity of the river to clean itself. The addition of nitrogen from fertilizers causes acidization of the water. In addition to the polluted waterways, nitrogen contributes to smog and greenhouse gases, which are bad for human health and the economy. Costs are

2005). The rules for deep-sea life are different than those for terrestrial species. Stratification plays an important role in species classification in vent environments. As the chimney grows in height the environment changes. Tarasov and associates believe that deep-sea vents have a longer evolutionary history then shallow vents found closer to the surface. This is an important factor in understanding how hydrothermal vents are connected to early life on planet

Christian Biotechnology: Not a Contradiction in Terms Presented with the idea of "Bioethics" most people in the scientific community today immediately get the impression of repressive, Luddite forces wishing to stifle research and advancement in the name of morality and God. Unfortunately, this stereotype too often holds true. If one looks over the many independent sites on the Internet regarding bioethics, reads popular magazines and publications, or browses library shelves for

Harmful Algal Blooms Weather events can impact ocean conditions in a variety of different manners. First, extreme events like hurricanes, coastal storms, and floods can physically transport organisms from part of the ocean to another part of the ocean, causing the type of disruption that leads to a harmful algal bloom. Second, extreme weather conditions like El Nino and La Nina can cause temperature changes that impact growing conditions in

The rate of such behavior was considered to be significant as a measure of responsive strength (Skinner 1938, 1966, 1986; Killeen & Hall 2001). True or not, the emphasis on response rate has resulted in a scarcity of investigational work by operant conditioners on non-recurrent behavior such as movement in space. Operant conditioning differs from other type of learning study in one important aspect. The focus has been more or