Astudent claims that cellular respiration is essential to cells so that they have a means for getting rid of excess carbon dioxide. what is wrong with this statement?

What have we learned from fossil evidence about evolution? a) it is an abrupt change. b)the process is observable. c) it takes place during one lifetime only. d)the most complex traits are always selected.

Indica el nombre y la fucion de los vasos sanguineos que entran y salen de los riñones

Why do leaves change color in the fall? green pigments break down and no longer mask the color of chlorophyll. chlorophyll breaks down and no longer masks the colors of other pigments. red- and yellow-colored pigments grow and mask green-colored chlorophyll. green-colored chlorophyll breaks down and turns red and yellow.