Wake Technical Community College Ice Core Basics Questions

I’m working on a science multi-part question and need the explanation and answer to help me learn.

 The article needed to answer the questions is attached. Here are the questions belown 1. Using evidence from the text, explain the meaning of rBP/n the lower x axis?         2. Using evidence from the text, compare, and contrast the way the X and y axisàare implemented?                                                   3. Which of the variables graphed appears most linked to temperature changes? Explain using answers from the text.             4. Which of the variables graphed appears least linked to temperature changes? Explain using answers from the text..            5.Compare and contrast the evidence of earths history found in rock layers verse ice cores? Support your response by using evidence from the text.                                   Here is the text link I also attached as a pdf https://www.antarcticglaciers.org/glaciers-and-climate/ice-cores/ice-core-basics/