:30:00
Oh, that's enough. That's enough.
No more. It's fine here.
:30:04
- What time is it?
- I don't know.
:30:06
- I got a test tomorrow.
- It's so late.
:30:08
- So do I.
- Mrs. Doyle hates me.
:30:10
OK.
:30:11
So who would like to tell us something
about carbon dioxide?
:30:18
Ben.
:30:20
Carbon dioxide.
:30:22
That's what you breathe on Mars.
:30:27
They have dust storms
for months there, you know.
:30:29
- And...
- Stupid.
:30:31
And the temperature's 50 below.
:30:35
And that's what you'd breathe
on Mars.
:30:37
- What a geek.
- What is he talking about?
:30:39
And...
:30:49
- Trisha.
- What?
:30:51
Carbon dioxide is formed
:30:52
during respiration, combustion
and decomposition.
:31:46
Are you crazy? I'm here!
:31:50
Stop it.