The demand for which kind of lightbulb has stayed about the same during this time period? The graph shows the percentages of different types of lightbulbs shipped to consumers in North America over three years.
A. LED
B. CFL
C. Incandescent
D. Fluorescent

the wires in the toaster turning red and the toast crisping and turning brown

measuring light intensity

light meters can be used to measure light intensity. the meter is held at the soil surface and pointed in the direction of the maximum light intensity, and then the meter is read.

errors can be made when measuring light intensity by accidentally shading the light meter. the reliability of the results can be checked by taking many samples.

the answer is c a tornado

imagine a line passing through the center of earth that goes through both the north pole and the south pole. this imaginary line is called an axis. earth spins around its axis, just as a top spins around its spindle. this spinning movement is called earth's rotation. at the same time that the earth spins on its axis, it also orbits, or revolves around the sun. this movement is called revolution.