Question

1. according to figure 2, which of the following compounds would most typically be found only in rocks at the moderate stage? f. ammonite g. eurypterid h. carbonite j. clay 37. according to figure 1, a fauna h rock most likely forms under which of the following pressure and temperature conditions? pressure temperature a. 4 psi 200°c b. 8 psi 500°c c. 12 psi 350°c d. 16 psi 150°c 39. according to figure 2, the presence of which of the following compounds in a fossil is the least helpful when determining the fossils stage? a. hydrogen b. trilobite c. amber d. eurypterid 40. cast fossils are formed when material is placed into a depression in a rock near the surface. they are formed at very high temperatures and low pressures. according to figure 1, cast fossils are most likely formed in which of the following faunas? f. fauna d g. fauna h h. fauna b j. fauna a

Explanation:

Step1: Analyze question 36

Refer to Figure 2 to find compound in moderate - stage only.

Step2: Check options

Annoite is in early - stage too, so F is wrong. Eurypterid is in late - stage too, so G is wrong. Carbonite is only in moderate - stage, so H is correct. Clay is not in Figure 2, so J is wrong.

Step3: Analyze question 37

Refer to Figure 1 to find pressure and temperature for Fauna H.

Step4: Check options

Find the pressure - temperature range for Fauna H. It is around 16 psi and 150°C, so D is correct.

Step5: Analyze question 39

Refer to Figure 2 to determine least helpful compound for fossil stage.

Step6: Check options

Hydrogen is present in all stages, so it is least helpful, A is correct. Trilobite, Amber, and Eurypterid are not present in all stages.

Step7: Analyze question 40

Refer to Figure 1 and given formation conditions.

Step8: Check options

High temperature and low pressure match Fauna B's range, so H is correct.

Answer:

1. H. Carbonite
2. D. 16 psi, 150°C
3. A. Hydrogen
4. H. Fauna B