TOEFL Reading Academic Passage Practice #046 - Interplanetary Travel and Closed-Loop Habitats

What you will practice

• Reading comprehension
• Evidence and inference
• Time management

Topic: Biology · Read an Academic Passage

Passage preview

Interplanetary travel is constrained less by distance alone than by the mass, reliability, and timing required to keep a crew alive far from Earth. A mission must carry or generate breathable air, potable water, food, energy, spare parts, and radiation…