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

How can fertility rates affect the use of scarce resources?

A defining characteristic of sympatric speciation is Group of answer choices a. The appearance of new species in the midst of old ones b. Asexually reproducing populations c. Geographic isolation. d. Artificial selection e. Large populations

Where do most living things get the food they need for life A. either from air or food B. either from sunlight or air C. either from food or sunlight D. either from air or water

Where is g. m. a., cavite, 4117, philippines?

5. The most explosive volcanic eruptions are associated with what type of volcano? cinder cones fissure eruptions composite cones shield volcanoes

Which of the following peninsulas are in southwest asia

How do heat and landforms affect our weather?

Which conclusion explains Africa's economic and government problems after independence

Why did the French Revolution lead to war with other nations?

Eight pounds of potatoes cost $4.72 how much will 30 pounds cost