The images show the wings of two different organisms. The wings of the housefly and the bat are . This indicates that .

When lactate builds up in a runners muscles it causes a burning sensation what causes this to occur

During binary fission, what events must occur before the cell splits into two new cells?

Why do some dna fragments move farther than others during gel electrophoresis? a. because their shapes are different b. because they are different types of molecules c. because the samples are different colors d. because their masses are different