Welcome to Westonci.ca, the Q&A platform where your questions are met with detailed answers from experienced experts. Experience the convenience of getting accurate answers to your questions from a dedicated community of professionals. Explore comprehensive solutions to your questions from knowledgeable professionals across various fields on our platform.

Which of the following has the longest residence time?
a. silica in plants
b. carbon in limestone
c. carbon in the atmosphere
d. water in the oceans
d. all of these are approximately the same
e. water in the atmosphere