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

Complete the following sentence with the correct verb conjugation in the Preterit tense. Las meseras __________________ la cena.  (servir)

Complete the following sentence with the correct verb conjugation in the Preterit tense. Lisa se _________________ muy elegantemente.  (vestir)

Which of these may be caused by directed stress?

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

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. What is an effusive eruption?

Explain how geologists can construct a stratigraphic column for an entire state even though all formations are not found in all parts of the state?

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

In the lecture, I told you how limestone could form by precipitation of calcite from water. I also told you that limestone could have a biological origin – perhaps being formed by reef organisms. And, I said that limestone could have a clastic origin, but I did not tell you how this could happen. My bad. But, help me out, and tell me how limestone could have a clastic origin.