The surfaces of the inner, terrestrial planets of our solar system are composed of ________.
A) gases
B) frozen water
C) frozen carbon dioxide
D) molten lava
E) mineral matter

Question

Quizplus · Accepted Answer

The inner, terrestrial planets of our solar system include Mercury, Venus, Earth, and Mars. These planets have solid surfaces composed of mineral matter, such as rock and metal. A is incorrect because gases do not form solid surfaces. B and C are incorrect because frozen water and carbon dioxide are not the dominant components of the inner planets' surfaces. D may apply to certain areas of some of the terrestrial planets, but molten lava is not the dominant feature of their surfaces.

The Surfaces of the Inner, Terrestrial Planets of Our Solar