Which one of the following times would be the longest?
a. carboniferous period
b. paleozoic era
c. jurassic period
d. mesozoic era

Which of the following statements best explains why there tends to be a greater number of large cities in southern africa than the east africa

State a hypothesis with a numerical estimate of the calories contained within a peanut based on the nutritional information on the package label combined with what you have learned in this lesson about fuel efficiency and calorimeters.

Acanyon on the ocean floor at which the crust bends downward is called a(n)