Why might someone need to use or study the cells that are stored at the Frozen Zoo? Use facts and details from the Article in your answer.

ionic bonds are two oppositely charged ions that attract. a sodium ion has a 1 positive charge; a chloride ion has a 1 negative charge. sodium and chloride have oppostive charged ions that attract which forms an ionic bond. a chemical bond formed when two atoms share electrons is called

d. planting trees

the trees take in carbon to make oxygen.