Home › AP Environmental Science › Biology › Ecology and the Biosphere › Which ocean zone begins at a depth of 4000 m?
Which ocean zone begins at a depth of 4000 m?
AThe neritic zone
BThe photic zone
CThe intertidal zone
DThe abyssal zone
Answer & Solution
Correct answer: D. The abyssal zone
1. The intertidal zone is the strip between high and low tide, closest to land.
2. The neritic zone runs from there out to about 200 m at the edge of the continental shelf.
3. The abyssal zone is the deepest part, starting at 4000 m.
4. It is very cold, under very high pressure, and holds no plants because no light arrives.
_Source: OpenStax Biology 1e (CC BY 4.0), Chs 44 and 46, section 44.4 Aquatic Biomes_
Related questions
Wind matters as an abiotic factor mainly because it influences the rate of:Oxygen availability becomes a limiting factor for organisms living:Soil influences plant distribution through its pH, nutrient content and:Amphibians and reptiles are more limited in their geographic distribution than birds becauMarine organisms risk losing water to their surroundings because seawater has:Upwelling is ecologically important because water moving from the ocean bottom to the surfFall turnover in a lake happens when surface water cools to 4 degrees Celsius and then:The deepest water of an ice-covered lake is oxygen poor because: