Answer:
QUESTION - 3 ----> Revise & Repeat
A --->How did the Gas Levels Change:
ANSWER ----> O2 = Went Lower, (Decreases)
ANSWER ----> CO2 = Went Higher (Increases)
B ---> The total of O2 & CO2:
O2 = 5.0
CO2 = 7.0
5.0 + 7.0 = 12
ANSWER ------> So, Total Of O2 & CO2 = 12
C ----> Why do the gas levels stop changing in this case:
ANSWER ----> It is because there is no Exchange of Gases, However, the snails died and the gas levels did not change!
QUESTION - 4 ----> Challenge:
ANSWER ----> The Gases were recycled and there were no gases entering or escaping!
Step-by-step explanation:
Question 3 - REPEAT & REVISE
Question 4 - CHALLENGE
Hope I was able to help you!
Have an Awesome Saturday! :)