Purdue EAPS 104 Project 2 Answers

Purdue EAPS 104 Project 2 Answers

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1. How much did CO2 concentrations change between 1970 and 2005? 

2. What was the average annual increase in CO2 over this time period?  

3. At the current rate, what year will Co2 reach 560 ppm (2x preindustrial levels)  

4. What causes the annual oscillation in CO2 

What causes the long term (1979-2005) increase in CO2 concentrations? 

6. List the order of compounds from low pH to high pH 

7. Does an increase in pH mean more or less H+? 
8. Does a decrease in pH mean more or less H+? 
9. Over the last 20 million years, the range of ocean pH is from

What year will we first drop below pH 8.05, the lowest pH in the last 20 millions years? 

What will be the ocean pH in 2100? 

12. What is the chemical formula for the following: 

If CO increases in the atmosphere will the concentration of carbonic acid in the ocean go up or down? 

When carbonic acid breaks down in into bicarbonate and carbonate, does pH go up or down? 

When CO in the atmosphere goes up the overall shift in DIC is towards which compound? 

Why is less CaCO3 able to form? 

17. Set the year to 1865

18. Set the year to 2010

19. Set the year to 2070. Keep Scenario 1 optimistic 

20. Set the year to 2070. Keep Scenario 1 middle ground 

21. Set the year to 2070. Keep Scenario 1 pessimistic 

22. How much has the carbonate concentration changed between 1865 and 2070 for the  pessimistic scenario?

How many embryos does a sea urchin release each year? 

27. What are urchin test, pedicellaria, and Aristotle’s Lantern?

Juveniles grow a MgCO skeleton after 

The adult urchin test is made of 

Watch the video linked below and answer the questions