Case Study Bio

The summers are warm and short. The winters are cold and long. Precipitation ranges from more than 500 mm per year in the north to less than 300 mm in the south of the Prairies. The winter mean temperatures for the coldest months vary from -9.4°C in Lethbridge and -18.3°C in Winnipeg. In contrast, the mean temperature for the warmest month in Winnipeg is 19.7°C. The grasses tend to have long roots which penetrate deep into the soil where they could find moisture. The northern edge of this ecozone marks the beginning of the transition into forest areas. Prior to agricultural settlement in the late 19th century, the Prairie ecozone was the home of millions of bison. Today, mammals of this ecozone include mule and white-tailed deer, coyote, pronghorn (south-central portion), badger, whitetail jackrabbit, Richardson's ground squirrel, northern pocket gopher and the prairie dog. Unique bird species include ferruginous hawk, greater prairie chicken, sharp-tailed grouse, American avocet, burrowing owl, great blue heron, black-billed magpie and Baltimore oriole. Plains grizzlies, swift fox and greater prairie chickens are a few of animals to disappear from the

Plant life tends to be of low growth and, during the short summer, the birds arrive in large numbers to feed on the insects that are born in this period. The climate is cold summers and very cold winters characterize the tundra area in the northern most limit plant growth. Areas

a. It is a different species than any of the other species you have identified

might affect the fitness of each variant. In other words which factors might increase plant growth, survival,

1. Define evolution. There are many parameters and conditions that need to be in place in order for evolution to occur. One such parameter is that the population trait in question must be variable. i.e., there will be variations of a trait found in the population. What are some additional parameters and conditions necessary for evolution to take place?

Part C: Assume that the genes from the previous example are located along the chromosome

b. Genes can act indirectly by making it more likely you will be raised in a particular environment.

b. “We may as well assert that because a child has thrived upon milk, that it is never to have meat, or that the first twenty years of our lives is to become a precedent for the next twenty.”

In the north, the climate typically consists of hot and humid summers and mild to very severe winters. These severe winters result in freezing temperatures,

C. Humans only have a natural obligation to care for other humans in need. [From P4 and P5].

The first region is the Appalachian region, which is found in the Appalachian Mountains but is not only mountainous. This region is a great to find natural resources with a climate that is affected from two different oceans. The larger animal species would survive mainly on trees and shrubs that produce cones. The next region is the Coastal Plains, a low flat lying area near a seacoast. The climate here does not stay at a steady level it fluctuates between cold temperatures in the winter and hot temperatures in the summer. The Costal Plains are subjective to hurricanes, which are useful to biodiversity. The major problem happening to Costal Plains are the rising sea levels and the eroding shoreline. The third region is the Great Lakes-St.

b. Explain how you developed this hypothesis, using specific evidence that would support your hypothesis.

being much more resistant to the cold weather in the north. Though we have those certain

B is not correct because a strict social Darwinist would not agree with sanitation and housing regulations. They believe the government should not interfere with society because it will mess up the natural processes. If there were to sanitation and housing regulations it would cause society to reform the natural process and live the way the government wanted them to live.

2. Natural Selection- Darwin is a genius. Natural selection and its subcategories pertain to "survival of the fittest." Basically, traits that will help us succeed are typically the ones that carry through years of evolution.