Geothermal energy is very expensive

Why did the settlement of east texas stop in the late 1710s

Which of the following  bestillustrates a negative reinforcer?               a.  copland gives up candy to stave off chronic acid indigestion.    b.  nancy learns that she prefers chocolate over vanilla.    c.  carmine changes his major to english lit after failing a math exam.    d.  on a hot day, lindberg always drinks lemonade.

Answer the following question with at least three complete sentences. be sure to use specific examples from the lessons in your answer. why were the ancient greeks known as great thinkers?