Answer:
The same
Explanation:
Half life is the time taken for the number of atoms in a radioactive sample to decrease to half of the initial number of atoms. It is also the time taken for the activity of a radioactive sample to decrease to half of its original value.
If samples A and B were obtained from the same rock, then they contain the same number of atoms having the same initial activity even though the samples were not prepared in the same way for analysis.
Hence, samples A and B have the same half life.
Relative datingThe process of determining whether an object or event is older or younger than other objects or events.
Radiometric datingFinding the absolute age of a sample by determining the relative percentages of a radioactive parent isotope and stable daughter isotope
Answer is D:BOTH COMPARE THE OBJECT TO AN EVENT IN HISTORY.<span />
Answer:
It can be found in both animal and plant cells.
Explanation:
The endoplasmic reticulum can either be smooth or rough, and in general its function is to produce proteins for the rest of the cell to function.
Monomers are building blocks of the four basic macromolecules of life-monosaccharides are the monomers of carbohydrates, amino acids are the monomers of protein, glycerol/ fatty acids are the monomers of lipids and nucleotides are the monomers of DNA.