7.1 - 7.9 Quiz Study

Front

Relative dating

Back

Determines which of 2 fossils is older or younger

Front

Relative dating does not give a specific ___

Back

age

Front

Relative dating is based on the _________ of fossils in rock layers

Back

positions

Front

In Relative dating, low layers laid down earlier, so they contain _____ rocks

Back

older

Front

Absolute dating

Back

Determines how long ago a fossil organism lived.

Front

Absolute dating gives the fossil and approx. ___ __ _____.

Back

age in years

Front

Absolute dating is based on the amnt of _________ / other radioactive elements in the fossil.

Back

carbon-14

Front

LUCA

Back

Last Universal Common Ancestor

Front

1. *1st reason -

2. Why do scientists think RNA was 1st to evolve?

Back

RNA can encode gen info

Front

*2nd reason -

Why do scientists think RNA was the first organism molecule to evolve?

Back

RNA carries chem reactions