Why is a switch used in an electric circuit?

A. It is used to increase the power.

B. It is used to open and close the circuit.

C. It is used to decrease the magnetism.

What are the 3 vertical zones of the ocean?

What are two diseases that are caused by defective cell parts?

A weakened or dead version of an infectious agent such as a virus, resulting in a person's body forming antibodies that destroy the infectious agent when they encounter it, thereby bestowing immunity upon the person. True / False.

During which lunar phase is the moon's far side entirely dark? a. full moon b. first quarter c. last quarter d. new moon

Which types of claims on food labels are strictly regulated by the Food and Drug Administration (FDA) ? A. Nutrient claims and structure/function claims. B. Nutrient claims and health claims. C.

Determine why some prokaryotes have less dna but more genes than eukaryotes.

How can zoning laws be beneficial to a city's residents? a. They prevent new business development. b. They can prevent new development that would harm established residents. c. They limit the maximum height of buildings. d.

Describe how the availability of this technology might affect the frequency of genetic diseases in individuals and populations.

Biology 1 ecology test why are there so few plants that live at the ground level in a tropical rainforest?

What do plants do with the nitrogen they absorb through their roots?