Dr. Rood's Sugar High

Last week, Dr. Rood put on a presentation for the class to show how the human body reacts to the intake of sweets. His blood sugar level was recorded every five minutes. The data colected is shown in the graph below.

 

The x-axis shows the time (minutes) while the y-axis is the blood sugar level.

Insulin response is the reason for the body to react the way shown in the graph. When someone has a meal with many carbohydrates, blood sugar level increases and insulin is released. The carbohydrates get broken down into sugars and get transported to the muscles and fat cells by the insulin.  While the blood sugar level decrease, so does the insulin level. This act of transportation continues until your blood sugar level reaches its normal state.

The 12 Soil Orders of the World

There are many types of soils in the world. Scientists have broken up types of soil into twelve orders. The orders range from soils formed from volcanic ash (Andisols) to soils that shrink and expand depending on the weather (Vertisols). To learn about all twelve orders, you can visit this site 12 Soil Orders.

The USDA soil taxonomy was created by the United States department of Agriculture in 1975. It defines the characteristics of the twelve soil orders and states where each type is most commonly found. The soil taxonomy has been constantly changing since then. The map below is an example of a map found in the soil taxonomy.