Complete the following sentences with the correct verb conjugation in the Preterit Tense. Uds. _______________ ir de compras.  (querer)

El Imperfecto: please complete the following sentence by selecting the correct form in the Imperfect Tense. Lisa y Ana _______________ buenas amigas.  ( ser)

Complete the following sentences with the correct verb conjugation in the Preterit Tense. Ana no __________________ la verdad.  (saber)

El Imperfecto: please complete the following sentence by selecting the correct form in the Imperfect Tense. Yo ___________________ canciones románticas.  ( cantar)

Which of these may be kinds of chemical sedimentary rocks? Choose all correct answers.

(a) What are the differences between weathering and erosion? (b) Give several examples of different kinds of weathering. (c) Give several examples of different kinds or erosion.

How is absolute time commonly determined? Choose all that are correct.

What are the two most significant ways that rocks become metamorphosed? (Choose two answers.)

Where does metamorphism occur at high pressure and low temperature?

Eruptions on Hawaii are almost all – maybe all – effusive. But, eruptions in the Andes and in mountain ranges of Central America and the Cascades are often explosive. Explain this difference.