electronic beams
hope this help
The answer is letter b. less drug use. Being in religious involvement it can divert
teenager or even persons in taking or abuse drugs, some diversion can also help
people to don’t use drugs out of hobby or bored in life. Drug abuse sometimes can worst affect life.
Given the age of the meteorite is 4.5 billion years old with 78 atoms of lead-206 the answer should be B. 156. The half-life of uranium-238 in order to decay into lead-206 is 4.46 billion years, which means that the original number of atoms is 156.
