Everything we have learned about stars comes from studying their A. distance

B. color

C. age

D. emission spectra

Which of the following emerging technologies uses the principle of chromosomes to identify suspects

If the distance between two points on the ground is 10 miles and the distance between the same two points on a map is 4 inches, what is the map scale expressed as a ratio?

Which season has the least amount of rain in the northern latitudes