Energy is used constantly by organisms to power the process of life such as making new cells moving around materials this energy exists A as the energy found in molecular bonds such as sugar
B inside the nuclei of various atoms such as oxygen and carbon
C as the energy that keeps atoms in constant motion
D as animals that depend on plants for nutrients

chert is a sedimentary rock composed of microcrystalline or cryptocrystalline silica. with this little bit of information, you can come to the conclusion that your answer is c.  

explanation:

the alkaline earth metals (beryllium (be), magnesium (mg), calcium (ca), strontium (sr), barium (ba), and radium (ra)) are a group of chemical elements in the s-block of the periodic table with very similar properties: shiny. silvery-white. hopefully this ? i didn't fully understand the question

that's all i luck!