Match the era on the left with its characteristic on the right.
?
When Earth's atmosphere
formed
Precambrian
2
Ended with a massive
impact
Paleozoic
12
When oxygen-breathing
organisms first thrived
Mesozoic
Cenozoic
Began about 65 million
years ago
SUBNUTI

which elements do geologists measure to determine the age of an organism’s remains? check all that apply.

carbon-14

nitrogen

carbon-12

northern hill zone (nhz)

western himalayan regions of j& k (except jammu and kathua distt.); h.p. (except una and paonta valley); uttaranchal (except tarai area); sikkim and hills of west bengal and n.e. states

north western plains zone (nwpz)

punjab, haryana, delhi, rajasthan (except kota and udaipur divisions) and western up (except jhansi division), parts of j& k (jammu and kathua distt.) and parts of hp (una dist. and paonta valley) and uttaranchal (tarai region)