Magnesium has three isotopes. magnesium-24 has a percent abundance of 78.99% magnesium- 26 has a percent abundance of 11.01% what is the percent abundance of mangesium- 25?

Diffraction is when light is bent around obstructions. which of the these observation about clouds would indicate diffraction? a) after rain storms, you can sometimes see rainbows. b) clouds are white or gray and cannot be seen through. c) on a cloudy day, the temperature tends to be cooler than a sunny day. d) the edges of dark clouds appear lighter. this

Which of the following are sources of revenue for media companies? a. direct sales to producers b.advertising and subscriptions c. online purchase d. capital investments

What is the most important factor in determining climates.