Researchers aboard the h. m.s. challenger discovered over 4000 new species of marine life. true or false

 The given statement is true.

Explanation: The Challenger expedition was a scientific tour that made the discoveries of many marine life. This laid the foundation related to the  oceanography. The whole tour( expedition) was named after the Mother vessel the HMS Challenger, who was leading the expedition.

She travelled more than 70,000 nautical miles in exploring and surveying the marine life which led to the discovery of more than 4000 new species of the marine life.

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