paleosols

"It is difficult to provide for my family working on minimum wage."

"The building of the bridge will be completed in a couple of weeks."

"After the flood, we found strange deposits of dark, shiny rock in our backyard that were not part of the local soil. "

"The factory workers assembled the cars all day. "

"The noisy environment of the school cafeteria made it difficult to concentrate on my homework. "

"The ancient librarian was known for her vast knowledge of history. "

"The books were stacked neatly beneath the desk. "

"Construction is underway on the new bridge."

"The Nile delta is composed of sediment that was washed down and deposited at the mouth of the river."

"Turning the corner, I discovered a lovely little shop. I discovered that they sold widgets."

"The construction workers were digging a foundation for the new house. "

"The foundation of his institute has been wrought with difficulty."