Question

Which of these is the longest-lasting sink for carbon dioxide?

a. plant tissues and cellulose (the "woody" parts of plants)
b. the atmosphere
c. air bubbles within glacial ice
d. limestones?

Answer 1

The answer is: d. limestones

Step-by-step explanation:

Carbon that is naturally deposited in a certain deposit in the form of solid carbonate. This is a process characterized by the fact that it occurs slowly and is the main responsible for the accumulation of the so-called limestone. Silicates react with carbonic acid in groundwater, it reacts and dissolves calcium, magnesium, and other alkalis. When an organism dies, its remains are deposited as sediment, thus transforming into limestone.

Answer 2

Limestones are sedimentary rocks made of calcium carbonate which is in the form of calcite. It is formed in warm and shallow waters. It is an organic rock forming from shells as well as coral and debris. It also is form from chemical rocks that were formed by the precipitation of the mineral calcium carbonate from the water.