Brownsville is a borough in Fayette County, Pennsylvania, United States, officially founded in 1785 located 35 miles (56 km) south of Pittsburgh along the Monongahela River.
2nd Item Specification: Given a group of organisms and a key, classify organisms based on observable characteristics. Depth of Knowledge Level 1. 1  A tool used by scientists to identify unknown organisms based on observable characteristics is called a. 2  dichotomous key.
Lasheras' lab had previously developed tools to study the movement of cells. He studied the movement of a single-cell amoeba as a model for how human cells move during development, during immune responses, and when rebuilding damaged tissues. Lai adapted Lasheras' tools to study snails and slugs.