Discuss the term biosphere and its relationship to the ecosystems that comprise it. Address the following in your response: What does the term biosphere mean? How do the various ecosystems on Earth contribute to the biosphere as a whole? Can the Earth itself be considered a biosphere? Why or why […]

Select a specific pathogen (Genus species) that you have covered either in your reading to this point in the course or one that will be covered in later sessions. A pathogen is defined as any infectious microbial agent such as a virus, bacterium, prion, or fungus that causes disease or illness […]

Mutation and Human Evolution Just as scientists gather evidence about prehistoric animals by examining bones and fossils, scientists also study human bones and fossils to learn about changes in human populations. In addition, scientists study changes in the human genome to track and understand changes in the human population. As […]

Attention deficit disorder (ADD) is a syndrome in which a person has difficulty focusing sustained attention on a task for a significant amount of time. In some cases this is accompanied by hyperactivity as well. It is currently being diagnosed at an all-time high. Between 1989 and 1996, youth visits […]