The smallest unit of an element that maintains the properties of that element

How do darwin finches illistrate the thoery of natural selection

If two different substances, with the same mass (1 gram) absorb the same amount of energy, which of the following can be predicted? The temperature of both substances will increase equal amounts.

A woman pushes a 27 kg lawnmower at a steady speed. She exerts a 180 N force in a direction 31 degrees below the horizontal. The acceleration of gravity is 9.8 m/^2 Find the magnitude of the vertical force this lawnmower exerts on the lawn.

A red opaque object A. reflects all colors of the visible spectrum but red. B. absorbs red light only. C. reflects red light only. D. absorbs all colors of the visible spectrum equally.

Which is a likely use for a base? a. as a vitamin in your food b. etching metals for printing c. making foods taste sour d. making soaps and detergents

Which statement about ammeters and voltmeters is true? A. Current and voltage are the same throughout a circuit so where you place the ammeter and voltmeter doesn't matter. B.

Teens realize that things may be "shades of gray" after they enter Piaget's social stage. identity crisis stage. menarche stage. formal operational stage.

Technician A says that fractured rods have a unique mating surface and that only the cap that was fractured is the one that will fit that rod. Technician B says that a powdered metal rod is less expensive, lighter, and as strong as a forged rod.

What is the expected wavelength (in cm) of 10.5 ghz microwaves in free space?

There are 5,280 feet in 1 mile and 12 inches in one foot. How many inches are in a mile?