<span>noun1.an act or instance of nullifying.2.the state of being nullified.3.(often initial capital letter) the failure or refusal of a U.S. state to aid in enforcement of federal laws within its limits, especially on Constitutional grounds.</span>
Focus and make sure you understand even if it takes a while to get it keep it refreshed in ur head just stay on topic
Gene structure is the way a gene looks under a microscope, how would in a persons body just blown up so it is accessible to see by the human eye
