Which element would enable a geologist to determine the absolute age of a rock?

How is the male reproductive system different from other body systems? it isn’t necessary to vital signs. it monitors other body systems, and adjusts if necessary. it transports items from one system to another. it is the only system that produces hormones in the male.

Which of the following is an eon in the time scale? phanerozoic proterozoic archean all of the above

Anormal strand of dna is shown below, followed by the same strand of dna after mutations have occurred.