6. Which statement is true about alr pressure acting on an object? The amount of air pressure pushing down on an object will gradually decrease with time.
The amount of air pressure pushing up on an object will gradually increase with time.
There is just as much air pressure pushing up as there is pushing down on an object.
There is more air pressure pushing up on an object than there is pushing down.​

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.