From observing the figure, where do rockfalls and rock slides commonly occur? Need a Hint?

in the desert
on the prairie
near a streambed
areas with steep cliffs

Which best describes a gene? a. a sister chromatid b. a chromosome c. a tetrad d. a piece of a chromosome

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

This rapid change in species that rarely leaves behind fossil evidence is referred to as