Asedimentary rock is found to be 300 million years old. which type of organism is not likely to be found in the rock?
a) insects
b) mammals
c) fish
d) land plants

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