Answer:
84
Explanation:
42 X 2 since it is a pair
Cell-tissue-organ-organ system-organism
Hi
The answer is : C
Transcription Factors
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 :)