Iron: a. is forming today in the great lakes region as banded-iron formations (bifs). b. is stronger and weighs less than aluminum. c. was the first of the common metals (iron, aluminum, and copper) to be used by humankind. d. is alloyed with carbon and chromium to make stainless steel. e. all of the possible answers are correct.

The correct option is D: Is alloyed with carbon and chromium to make stainless steel.

Explanation:  Because of its physical characteristics, iron is a material that tends to oxidize easily. With the chromium alloy stainless steel is created, which for its quality can be used in the manufacture of structural steels.

which elements do geologists measure to determine the age of an organism’s remains? check all that apply.

carbon-14

nitrogen

carbon-12