1. The Mediterranean Sea filled with sea water from the Atlantic Ocean
about 4 million years ago. During which PERIOD did this change occur?*

During sunny hours, a large amount of build up between the hours of 1: 00-5: 00 pm. a. ozone b. mercury c. lead d. sulfuric acid

Which of the following does not describe a physical property of iron? a iron is silvery-white or gray in color. b iron has a boiling point of about 3,000°c. c iron is a magnetic element . d iron and sulfur react to form iron sulfide.

Compare the composition of the moon's surface with the composition of the earth's surface.