Question

which of these four features are labeled correctly? a marks the abyssal plain. b marks the continental slope. c marks the continental rise. d is a rift zone. identify features of the sea floor. 6 of 6 here in the center of the screen we are looking at the feature that was labeled d in the last question. its a submarine canyon. how did this canyon likely form? it formed as thermohaline currents eroded the sea floor. it represents a failed rifting zone. it was carved during lower stands of sea level during the last ice age. it formed due to tensional stress.

Explanation:

First Question (Labeling Seafloor Features)

• A (abyssal plain): Abyssal plains are flat, deep - sea areas, not the feature A likely is (e.g., continental shelf or slope - related). So A is incorrect.
• B (continental slope): The continental slope is the steep area between the continental shelf and abyssal plain, so B's labeling is correct.
• C (continental rise): The continental rise is the sediment - filled area at the base of the continental slope, so C's labeling is correct.
• D (rift zone): A rift zone is related to tectonic spreading, not a submarine canyon. So D is incorrect.

• Thermohaline currents erosion: Thermohaline currents are more about density - driven global circulation, not canyon formation.
• Failed rifting zone: A failed rifting zone is a tectonic feature, not related to submarine canyon formation.
• Lower sea level during last ice age: During the last ice age, sea levels were lower. Rivers could erode the continental shelf and slope, and when sea levels rose, these eroded channels became submarine canyons.
• Tensional stress: Tensional stress causes rifts, not submarine canyons.

Answer:

B. B marks the continental slope, C. C marks the continental rise

Second Question (Formation of Submarine Canyon)