Calcium carbonate is a chemical compound found in rocks and seashells. its chemical formula is caco3. which of the following statements is true?

a. calcium carbonate has two atoms of carbon.
b. calcium carbonate has three atoms of oxygen.
c. calcium carbonate has three atoms of carbon dioxide.
d. calcium carbonate has two atoms of oxygen.

Gregor mendel is best known for his work with pea plants and for uncover many of the mysteries of genetics. one of his major findings stated that there were specific, physical units of inheritance that are transmitted during reproduction. what is the the name given to these units of inheritance which can be found on chromosomes? a) centromeres b) cytoplasm c) genes d) nucleotides

What's the waste product of electrons and pyruvate combining in fermentation?  

Where are the strongest jet streams located?