Question

16 multiple answer 6 points what evidence do the rocks on mars reveal about the past and composition of the planet? choose the 3 correct answers: the rocks on mars have numerous fossils proving that life was once present the iron in the rocks turned rusty red from oxidation extinct volcanoes prove that mars was once geologically active mars has younger rocks than earth does rounded rocks and canyons were shaped by flowing water in the past the rocks on mars surface were formed from shells compacted at the bottom of dried oceans

Explanation:

• No fossils have been found on Mars to prove past life, so the first option is incorrect.
• The iron - rich rocks on Mars oxidize, giving the planet its red color.
• Extinct volcanoes are evidence of past geological activity.
• There is no conclusive evidence that Mars has younger rocks than Earth.
• Rounded rocks and canyons suggest past water flow.
• There is no evidence that Mars' surface rocks were formed from compacted shells at the bottom of dried oceans.

Answer:

B. The iron in the rocks turned rusty red from oxidation
C. Extinct volcanoes prove that Mars was once geologically active
E. Rounded rocks and canyons were shaped by flowing water in the past