The carbon dioxide level in Pod Four
slides up to 0.49%.
It's time to make a decision.

What's going wrong in Foster's Pod Four?

Foster's plants are not producing enough oxygen...

...because they're diseased

...because of radiation

The missing oxygen is being used up by
an overpopulation of creatures...

...in the water tank

...elsewhere in the pod

Foster is stressed, and...

...he's hyperventilating and
using up too much oxygen

Somewhere in Foster's pod...

...rusting metal is
consuming too much oxygen

Click on a solution.
Solve the mystery!