Which of the following factors is not essential for supporting life on Earth?

It has been suggested that life could exist on Mars. Which characteristic best supports the possibility of life on Mars?

Scientists have found evidence that in the past there may have been liquid water on the surface of the planet Mars. Why would scientists be interested in this information?

On a space mission, the gravitational environment can negatively affect the bone density of astronauts. Which accommodation will most likely protect the bone health of the crew on a space mission?

An astronaut's suit provides for the basic needs of the astronaut. Which of the following is NOT an accommodation provided by the astronaut's suit?

The insulated feature of space suit layers are designed to --

How does the space suit backpack help astronauts breathe in a space environment?

What work of Sir Isaac Newton helped others to understand and overcome the obstacles of modern space travel?

All of the following are ways that the atmosphere makes the existence of life on earth possible EXCEPT -

The equipment inside of a space vehicle must be attached by cords to accommodate for which factor?

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