Which element is not represented in the star spectrum below? A. Hydrogen
B. Helium
C. Calcium
D. Magnesium

What in scientific term why the salty popcorn causes this thirst

Use the phylogenetic tree to the right to determine which statement below is true. organisms a and f are not related. organism e is more closely related to organism b than organism f. organisms c and d are more closely related than organisms a and b. phylogenetic trees

Pl as time goes by and water goes through the water cycle again and again, the amount of water on earth: increases decreases ostays the same goes up and down