The lowest point in elevation in the United States is Death Valley, California. Death Valley is 86 meters below sea level. Which set of numbers best describes elevations in Death Valley?

(a) Describe the process of slashand-burn agriculture.

(b) What might be some dangers of the extensive use of slash-and-burn agriculture?

Visitors to Pittsburgh, Pennsylvania, can ride the Incline from the river valley up Mt. Washington. The Incline has a 403-ft rise and a 685-ft run. What is the angle made by the track and the horizontal?

A zip line is constructed across a valley, as shown in the diagram. What is the width w of the valley?

Which feature on this diagram is a tarn?

A. 1, the circular depression at the head of the valley

B. 2, a lake in the upper valley

C. 3 , a steep ridge

D. 4, a valley that is above the level of the main valley

Explain the significance of: Sahara, socaled, Great Rift Valley, Congo River, plateau, Kalahari, savanna, Nubia, Kushites, resources, Ethiopia, King ‘Ezana

Base your answers to questions on the illustration below, which shows a mountainous region cut by a large valley in its center.

Describe additional geologic evidence that might be found on the valley floor that would support. the idea that glacial ice formed this valley. [1]

Base your answers to questions on the illustration below, which shows a mountainous region cut by a large valley in its center.

What characteristic of this large valley supports the inference that glacial ice formed the valley? [1]

Which feature on this diagram is an arete?

A. 1, the circular depression at the head of the valley

B. 2, a lake in the upper valley

C. 3 , a steep ridge

D. 4, a valley that is above the level of the main valley

Which of the following statements about the Mississippi River and the Mississippi River delta are true? Choose all that apply. a. The path of the Mississippi River to the ocean changes overtime. b. The Mississippi River delta is the largest river delta in the world. c. The Mississippi River empties into the Gulf of Mexico. d. The shape of the Mississippi River delta will not change over time.

How does a glaciated mountain valley differ in appearance from a mountain valley that was not glaciated?

In a review of Spoon River Anthology, Carl Sandburg wrote, "The people whose faces look out from the pages of the book are people of life itself, each trait of them as plain or as mysterious as in the old home valley where the writer came from." Do you think his remark accurately describes Lucinda Matlock, as she is characterized in the poem? Explain.

A total of 52 gophers and badgers lived in the valley. If three times the number of badgers exceeded the number of gophers by four, how many of each lived in the valley?

The Nile River is 4160 miles long. The Amazon River is

$$\frac{25}{26}$$

as long. How long is the Amazon River?