D bc the product u using was used b4 so if something is used b4 den u cnt use it again
B. Catalysts are not changed during a chemical reaction.
Habitat destruction is the cause of the loss of species because the organism have been deprived of their living requirements.
Iron is a chemical element with symbol Fe and atomic number 26. It is a metal in the first transition series. It is by mass the most common element on Earth, forming much of Earth's outer and inner core
