Name each of the stages in the Transtheoretical Model (i.e., the “Stages of Change Model” as discussed via Norcross & Prochaska) including what is each stage and how one should appropriately intervene at each stage.

T/F: A change in allele frequencies over successive generations in a population signifies that some level of evolution is occurring.

Bighorn sheep population growth.jpg Five new individuals were added to a small population of bighorn sheep in 1986, and ten more were added between 1990 and 1994. According to the figure, what occurred in this population after these additions?

Which of the following threaten biodiversity?

If a pollutant, like DDT, is eaten by zooplankton in the sea, that are then consumed by small fish, that are consumed by larger fish, that are consumed by eagles. This causes the concentration of DDT in the blood of these animals to get higher as you work our way up the food chain. This is an example of:

turtles in ponds(1).png Which pond has the higher relative abundance?

keystone species.png  Use the graph to answer the following question: What does the graph tell you about the effect of a keystone species?

nitrogen cycle.png Use the figure to answer the question. Consider the global nitrogen cycle depicted in the figure. What is the limiting portion of the cycle for plants?

________use chemicals from the environment (like deep-sea vents) to make their food.

An incremental lowering of standards that results with each new generation lacking knowledge/observation of the historical (or previous) condition of the environment being observed describes: