ANSWER: C biosphere
Explanation: because biosphere is all animals together BRAINLSIT?
Relative datingThe process of determining whether an object or event is older or younger than other objects or events.
Radiometric datingFinding the absolute age of a sample by determining the relative percentages of a radioactive parent isotope and stable daughter isotope
Answer is D:BOTH COMPARE THE OBJECT TO AN EVENT IN HISTORY.<span />
Answer:
negative feedback inhibition.
Organelles do not belong with these levels.