Approximately how often has the Texas constitution been amended? 

Which of the following is the best description of Texas’s political culture? 

Imagine a stream with two cross sections, A1 and A2, as shown.  If the discharge (Q) remains constant, what happens to stream velocity at Location 2 if A2 is constant but Q increases after A1 (for instance by a tributary coming in)?

What do greenhouse gases do as part of the greenhouse effect?

What is base level?

Where will a photon emitted by a greenhouse gas molecule most likely go?

If more terrestrial radiation were able to leave Earth’s atmosphere than at present, we would experience

Describe a feedback loop in the climate system.  Explain if the loop is positive or negative and if it leads to cooling or warming.

How much incoming sunlight do greenhouse gases absorb?

What kind of feedback accelerates a change instead of braking it?