Which of the following statements about the earth's atmosphere is true? it contains 21% oxygen. it contains 78% water vapor. it contains 21% carbon dioxide. it blocks all radiation from the sun.

the way that the mass of carbon can be conserved through cellular respiration is through a process/law called the law of conservation of mass which even tho it undergoes a process, mass is not be destroyed or changed

characterization of nanoparticles is a critical step in nanomaterial production as it provides information of dimension, morphology, surface charge, distribution and degree of surface functionalization.