381Balancing a chemical equation so that both sides have equal numbers of each atom is required mainly to satisfy what law?
382A physical change, unlike a chemical change, generally does not result in the formation of what?
383Melting ice and boiling water are both classic examples of what kind of change?
384Burning wood and cooking an egg are both classic examples of what kind of change?
385Green plants absorb carbon dioxide from the air mainly to carry out which essential biological process?
386During daylight hours, green plants release which gas into the atmosphere as a byproduct of photosynthesis?
387Which atmospheric gas is generally considered the primary contributor to the greenhouse effect and global warming?
388The ozone layer high in Earth’s atmosphere mainly protects living organisms by absorbing which kind of radiation?
389Acid rain is mainly caused by atmospheric pollution from which pair of gases?
390Which common household substance is often used to neutralize minor acid spills due to its mild basic nature?
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