Blog #10 Dissections

       Dissections are an important part of biology because it is important for students to see how organs of different species look up close and not through a picture. The students get the opportunity to see what scientists see when they are doing research and get a greater understanding of how organs work. Animals that have similar organs to humans, eg. mammals, and common plants that can be found in most places should be studied. Mammals because students can understand how their bodies work, and common plants so that students can see how they help the environment.

Blog#9 Community Interactions

Competion:
                 Competition occurs when two or more species try to use the same resources. The resources may consist of food, sunlight, water, etc. When species compete for resources there is usually a winner and a loser, the loser usually does not survive.

Commensalism:
                  Commensalism takes place when one of two species, living in the same habitat, benefits while the other is neither helped or harmed. Some examples of this are barnacles attaching themselves to whales or orchids living on trees.

Mutualism:
                  In mutualism both species benefit from the interaction. Bees and flowers have a mutualistic relationship.

Predation:
                  Predation occurs when one species captures and feeds on another species. An example of predation would be humans hunting chicken or cows. Or a cheetah hunting a gazelle.

Parasitism
                  In parasitism one organism lives on or inside another organism harming it. A tick living on a dog, or another animal, would be an example of parasitism.