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.
For example, biologists use microscopes to study tiny organisms, such as bacteria and algae. Doctors and lab workers... Microscopes are currently used in a variety of disciplines, fields and contexts. For example, biologists use microscopes to study tiny organisms, such as bacteria and algae. Doctors and lab workers...