Are marsupials mammals that lay eggs?

The activity of the modern sample is 1.10 bq . how long does that measurement take?

The table lists the observations students made about four specimens under a microscope. based on these observations, what specimens did the students examine? animal plant virus prokaryote cell membrane present ribosomes present lysosomes present nuclear membrane present cell wall present ribosomes present nuclear membrane absent cell wall present ribosomes present nucleus present large vacuole present reproduces inside of a cell nucleus absent rna present 2019 edmentum all rights reserved intl

Which two criteria must be met before scientist can use radiocarbon dating? explain your answer