Question

Scientists believe that the earth's core is made mostly of: silicon and oxygen iron and nickel granite and basalt calcium carbonate

Answer 1

iron and nickel

Step-by-step explanation:

According to the various researches conducted by numerous scientists, the core of the earth is made of "IRON and NICKEL." The Iron forms the inner most park, with a radius of about 750 miles thickness, while the Nickel-Iron alloy forms the outcome, with a radius of about 1,355 miles thickness.

Hence, in this case, the correct answer is " Scientists believe that the earth's core is made mostly of: IRON and NICKEL.