Question

determine which description refers to each term. complete the table.

	chemical weathering	gas exchange	limestone formation
during this process, co₂ dissolves into ocean water and forms carbonic acid, which breaks down into simple ions. this process can also happen in reverse.	〇	〇	〇
during this process, the fossilized remains of marine organisms mix with sediment to produce a type of carbon - rich rock.	〇	〇	〇

Explanation:

Step1: Analyze "Chemical weathering"

The first row's description is about rocks on land being broken down by carbonic acid (a chemical process) and carbon being removed from the atmosphere. Chemical weathering involves the chemical breakdown of rocks, so this matches "Chemical weathering". So mark the first row's "Chemical weathering" column.

Step2: Analyze "Gas exchange"

The second row describes \( \text{CO}_2 \) dissolving into ocean water (a gas - water interaction, gas exchange) and forming carbonic acid, with the process being reversible. This is the gas exchange between the atmosphere ( \( \text{CO}_2 \) ) and ocean water. So mark the second row's "Gas exchange" column.

Step3: Analyze "Limestone formation"

The third row is about fossilized marine organisms mixing with sediment to form a carbon - rich rock (limestone is a carbon - rich rock formed from marine sediments and organisms). So mark the third row's "Limestone formation" column.

Answer:

Description	Chemical weathering	Gas exchange	Limestone formation
During this process, \( \text{CO}_2 \) dissolves into ocean water and forms carbonic acid, which breaks down into simple ions. This process can also happen in reverse.		✔️
During this process, the fossilized remains of marine organisms mix with sediment to produce a type of carbon - rich rock.			✔️