If the half life of a decaying isotope is 10 years, which statement is true after 10 years?
A. There are more daughter nuclei than parent nuclei in a sample.
B. The relative numbers of atoms cannot be determined.
O c. The numbers of parent nuclei and daughter nuclei in a sample are
equal
O D. There are more parent nuclei than daughter nuclei in a sample.
NEED AWNER ASAPPP

Look it up you feel me

How is it possible that phylogenies based on sequences from nuclear genomes and organellar genomes (i.e., chloroplasts and mitochondria) from the same group of species yield phylogenetic trees with different branching orders?   answer :   the genome of the endosymbiont is more closely related to members of the group in which it originally evolved, while the nuclear genome of the engulfing organism has its own evolutionary trajectory.

Well it depends on the object or substance

2/2m is the answer easy