According to the theory of evolution, birds' feathers evolved from.

a. reptile scales

b. gill slits.

c. fish fins.

d. gill arches.

The major trade route that allowed foods to be exchanged from China to Rome was the

Part A) How many hours of day light occur in New England on June 21 (near the start of Summer) ? Part B) How many hours of day light occur in New England on March 21 (near the start of Spring) and September 21 (near the start of Fall) ?

What term is used to describe the rotating updraft within a supercell thunderstorm?

List and briefly describe at least four glacial depositional features.

What tiny country lies between Austria and Switzerland

A geologist is making repeated measurements) in grams) on the massof a rock. It is not known whether the measurements are a randomsample from an approximately normal population.

Which term refers to South Asia's unique geographical position in Asia

According to Alonso, Mexican nationalist ideology completely ignores the contributions of which group that was part of colonial Mexican society? A) European whitesB) African slavesC) CreolesD) conquered indigenous peoples

Planets travel at a constant rate around the Sun. a. True b. False

Why do the North and South pole experience seasons differently than the rest of the planet? Why do they have periods of continuous daylight or continuous darkness?