Again :)))))
Calcium oxide:
II II
Ca O ---> CaO
water ---> H₂O
CaO + H₂O -----> Ca(OH)₂
For there privacy you never know
The answer is C : Unicellular bacteria
Answer: To determine the relative age of different rocks, geologists start with the assumption that unless something has happened, in a sequence of sedimentary rock layers, the newer rock layers will be on top of older ones. This is called the Rule of Superposition. ... With absolute age dating, you get a real age in actual years.
Explanation: Hope this helps :)