Final answer:
The statement is true.
Step-by-step explanation:
False. Earth and Mars are similar in terms of their basic makeups, as they are both terrestrial planets. They both have a dense metallic core and an overlying mantle and crust composed of less dense materials like silicate rock. The information provided states that Earth, Venus, and Mars all have roughly similar bulk compositions, with about one third of their mass consisting of iron-nickel or iron-sulfur combinations and two thirds made of silicates. This indicates that the statement is true.