The observational fact about a cepheid variable star that leads to a measurement of its distance from earth is that its period of variation is directly related to its

What factors influence population patterns in the United States?

Question 11 Which object seems to fit the following trend the least: Higher density closer to the sun, lower density farther from the sun? a) Jupiter b) Mercury c) Neptune d) Pluto

Which of the following geologic environments has lead to the formation of the Andes mountains and Cotopaxi Volcano? A. a continental volcanic arc created due to the divergence (moving apart) of the Nazca Plate and the South American Plate. B.

List the jovian planets

How much of the Sun's ultraviolet radiation reaches Earth's surface? 1. some of the ultraviolet radiation 2. most of the ultraviolet radiation 3. almost all of the ultraviolet radiation 4. none of the ultraviolet radiation 5.

Which is not a major similarity or difference between freshwater and marine ecosystems? a. both support a large number of plants and animals adapted for aquatic living b.

10. Where are intermediate igneous rocks (andesite and diorite) most commonly found? a. mid-ocean ridges b. subduction zones c. transform faults

Convert 1inch to 126,720 to statement scale with units in miles

14. Which of these best supports a government taking part in a debt-for-nature swap? a. It increases the input of foreign countries. b. It decreases national security. c. It increases the amount of land eligible for settling and harvesting. d.

About how many tourists visit Florida each year? A. 1 million B. 10 million C. 50 million D. 100 million