Earth's oceans contain many dissolved elements like calcium, sodium, and chlorine. these elements plus several others combine to form the salts in the oceans. what is a major source of calcium and sodium in oceans? a) air pollutants b) gases from active volcanoes c) minerals dissolved in aquifers d) weathering and erosion of rocks

Which best explains why an iceberg floats?

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

Joe shines white light into a bowl half full of water at an angle of incident of 27.5°. calculate the angle of refraction in the water given the indices of refraction for air and water are 1.00 and 1.36, respectively.