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Describe the difference between K-selected and r-selected species. Include three characteristics typically associated with each type and give an example of a species in each group. (Make sure to clearly describe your answer and write in complete sentences.)

Why is it so hard to know how many species exist on Earth? Describe at least 2 reasons. (Make sure to clearly describe your answers and write in complete sentences.)

Choose the letter on the graph that best answers the question.  Which part of the graph can be called an overshoot?

Oxygen has 3 stable isotopes – Oxygen-16, Oxygen-17, and Oxygen-18. How many protons does Oxygen-18 have?

What biome is shown in the climatogram above? Explain how you know. (Make sure to clearly explain your answer and write in complete sentences.)

Which of the following nutrients can be a limiting nutrient because of plants’ inability to use its gaseous form?

Which process of evolution is NOT random?

Looking at the ecological pyramid above, what would be the most likely number of joules to fill in x, y, and z?

Which population growth model does the graph above illustrate?

A population of rabbits, introduced to an island, has rapid growth for a few years and then slows. What is a likely reason for this pattern?