Question

Calcareous shells generally will not accumulate on the ocean floor when the water depth exceeds about 4,500 meters (around 15,000 feet).

A. True
B. False

Answer 1

Calcareous shells generally do not accumulate on the ocean floor when the water depth exceeds 4,500 meters.

Step-by-step explanation:

False. Calcareous shells generally will not accumulate on the ocean floor when the water depth exceeds about 4,500 meters (around 15,000 feet).

Calcareous shells are made up of calcium carbonate, and their accumulation is influenced by factors such as temperature, pressure, and the availability of dissolved calcium and carbonate ions in the water. At depths greater than 4,500 meters, the pressure and temperature conditions make it more difficult for the shells to form and remain intact, hence their limited accumulation in deeper parts of the ocean.

For example, the abyssal zone, the deepest part of the ocean, which is at depths of 4000 meters or greater, has very high pressure and low nutrient content, making it less favorable for the accumulation of calcareous shells.