Q: How many years can dissolved carbon be stored in the deep ocean?


Read this paragraph and choose the correct option from the provided answers:

Water erosion by runoff, rivers, and streams dissolves carbon in rocks and carries it to the ocean. Ocean water near the surface dissolves carbon dioxide from the atmosphere. Dissolved carbon may be stored in the deep ocean for thousands of years.

 Choices:

- unknown

- hundreds

- tens

- thousands


A:
thousands