Which statement describes absolute and apparent brightness?
o absolute brightness and apparent brightness are identical ways to describe the brightness of a star
absolute brightness and apparent brightness change with the distance from the star to the observer.
absolute brightness depends on the distance from the star to the observer, whereas apparent brightness is
always the same
absolute brightness is the actual amount of light produced by the star, whereas apparent brightness changes
with distance from the observer

d

Read this summary of a scientific theory: "cells are the most basic structural and functional units of life. all living organisms are made up of one or more cells. all cells that are alive in the world today came from pre-existing cells." which of the following would require this theory to be modified? -a.) a survey finds that a majority of people believe viruses carry out the basic processes of life. -b.) a prominent scientist says she feels strongly that one day the theory will be challenged by life on other planets. -c.) the dna of unicellular and multi-cellular organisms is shown to have many fundamental similarities. -d.) scientific observations show that microscopic organisms living in the deep ocean are not made up of cells.