28. In the 19th century, it _ two or three months to cross North America by covered wagon. The trip - very rough and often dangerous.

a. took / was

(b, had taken / had been

c. took / had been

d. had taken / was

6. What common unit of time is related to this lunar motion?

Landforms deposited by water, wind, or ice are all created from what? a. soil b. rock c. sediment d. weathering

Granite is a (n) - extrusive igneous rock foliated metamorphic rock intrusive igneous rock dark mineral with cleavage

Olivine has what two positive cations in its silicate structure?

Explain how the shape of a river's stream bed can affect the river's speed and its power to cause erosion.

When designing storyboards, it is a good idea to use different colors to Group of answer choices True/False

What is a major difference between urban Egypt and natural Egypt

In the oxygen-carbon dioxide cycle, a. animals produce oxygen used by plants for photosynthesis. b. animals produce oxygen used by plants for respiration. c. animals produce carbon dioxide used by plants for photosynthesis. d.

What is the form of government in each of the nations in this region? Dictatorship Republic Democracy Monarchy

How can you tell were an ocean begins and ends?