MARS EXPLORATION: rovers, missions, life on Mars, water, colonization, red planet reading comprehension passages. What clues would convince you that Mars once ran with water, and maybe life? Track landers and rovers as they read rocks, drill cores, and sample the thin air for organics and past habitability. Then consider what it would take to live there: radiation, dust, and the hard math of supply versus self sufficiency. This digital resource features Read Aloud Audio, Self-Marking Multiple C