If you were a scientist trying to determine if an organism evolved gradually or rapidly, how would patterns in the fossil record help you? Explain how the pattern would provide evidence to support the rate of evolution for that organism.

Compare and contrast the gas-exchange mechanisms of hydras, earthworms, insects, aquatic vertebrates, and terrestrial vertebrates.

Did you identify with Walter Mitty as you read this story? Explain.

a. In an area with several different rock layers, which is oldest? Explain. b. How could a geologist match the rock layers in one area to rock layers found in another area?

Determine the coordinates of any turning points on the given curves. Decide if it is a maximum or minimum. Check your answer by using your GDC. $y=x^{2}(9-x)$

Discuss the advantages and disadvantages of selective breeding.

Use a calculator or computer to estimate each value. $\frac{14}{\sqrt{e}}$

Prof. Okamoto selects 3 students to report on 3 different current events. If there are 28 students in the class, in how many ways can Professor Okamoto make the selection?

Explain the role of mutations in genetic variation and in the diversity of living things. Support your explanation with evidence.

2. Analyze Data Refer to the diagram. Which rock layer will have the oldest organisms? Explain.

Suppose that the amount, in grams, of plutonium 241 present in a given sample is determined by the function defined by $A(t)=2.00 e^{-0.053t}$, where t is measured in years. Find the amount present in the sample after the given number of years. (a) 4, (b) 10, (c) 20, (d) What was the initial amount present?

Solve the compound inequality, if possible. Graph the solution set (if one exists) and write it using interval notation.

$$- 3 < f ( x ) < 7 \text { where } f ( x ) = \frac { 2 } { 3 } x - \frac { 1 } { 3 }$$

Construct an Explanation: How do you account for differences between the bat's wing and the dolphin's flipper?

For each generic reaction, determine the value of $\Delta H_{2}$ in terms of $\Delta H_{1}$ a. $A + B \longrightarrow 2 C$ $\Delta H_{1}$ $2C \longrightarrow A+B$ $\Delta H_{2} = ?$ b. $A + 1/2 B \longrightarrow C$ $\Delta H_{1}$ $2A + B \longrightarrow 2 C$ $\Delta H_{2} = ?$ c. $A \longrightarrow B + 2 C$ $\Delta H_{1}$ $1/2 B + C \longrightarrow 1/2 A$ $\Delta H_{2} = ?$