which of the following figures correctly depicts the interactions at the lac operon when lactose is not being utilized

Study the diagram of a desert food chain . what would most likely happen if the kangaroo rats were killed off and removed from the food chain ?

The organelle pictured is found in cells of and is theorized to have once been an independent organism.

This comparative chart is an example of one that might be used by scientists and law enforcement personnel for identification purposes. the chart represents a technological advance called