From the given options, the following sidovery involving DNA happened first: C) Griffith learned that a chemical changed harmless cells into harmful cells.
The British medical officer named Frederick Griffith discovered DNA in 1928 while conducting experiments using Streptococcus pneumoniae bacteria and mice.
<span>He concluded that the living R bacteria had been transformed into pathogenic S bacteria by an unknown, heritable substance from the dead S cells that allowed the R cells to make capsules.</span>
The Crab Nebula is the shattered remnant of a massive star that ended its life in a supernova explosion. Hope this helps.
Answer: The last choice, Gravitational Pull would become weaker and weight would decrease because when out of Earth's atmosphere, objects (also animals & humans) are able to float because there isn't really a gravitational pull, and because there isn't a gravitational pull, the weight changes and it is less than it was before. But mass never changes.
I believe it is used to determine the age of fossil fuels