SDSU OCEANS 100 EXAM 3 Latest Update 2024-
2025 Actual Exam from Credible Sources with
Questions and Verified Correct Answers Golden
Ticket to Guaranteed A+ Verified by Professor
% of species in ocean - CORRECT ANSWER: 14% b/c oceans are more stable;
continental environments require constant adaptation from organisms
2 marine environments - CORRECT ANSWER: 1) pelagic realm 2) benthic realm
3 domains - CORRECT ANSWER: 1) bacteria 2) archaea 3) eukaryote
4 types of pollution - CORRECT ANSWER: petroleum, sewage, heavy metals, solid
waste/trash
6 kingdoms - CORRECT ANSWER: 1) bacteria 2) archaea 3) protista 4) fungi 5) plantae
6) animalia
Atlantic Coast - CORRECT ANSWER: depositional; passive margin; no plate boundary;
shoreline rises and ocean migrates inland
beach - CORRECT ANSWER: shore and nearshore; very active
benthic realm - CORRECT ANSWER: seafloor bottom dwellers or benthos; less
nutrients at the bottom, but MOST diversity
benthos - CORRECT ANSWER: bottom dwellers; live on seafloor such hydrothermal
vents and coasts (sponge, crabs, coral, sea star)
berm - CORRECT ANSWER: dry area at foot of coastal cliff; sand
, bio-degradation - CORRECT ANSWER: nature breaks apart and converts to natural
components
Cambrian Explosion - CORRECT ANSWER: an explosion of diversity led to period of 5-
10 million years of complex, multi-celled organisms
cause of sea level change (climate change) - CORRECT ANSWER: global warming =
sea levels rise
ice age = sea levels drop
cause of sea level change (plate tectonics) - CORRECT ANSWER: fast-spreading: sea
levels rise; ocean basin cannot hold
slow-spreading: sea levels drop
causes of sea level change - CORRECT ANSWER: 1) climate change 2) plate tectonics
Charles Moore - CORRECT ANSWER: discovered the North Pacific Garage Patch
(garbage build-up in North Pacific Gyre)
classification of marine organisms - CORRECT ANSWER: 1) plankton 2) nekton 3)
benthos
coast - CORRECT ANSWER: land extending inland as far as marine is seen; land
adjacent to the beach affected by the ocean
depositional coast - CORRECT ANSWER: flat coast b/c of passive margin; sediment
comes from rivers; SUBMERGENT COAST; ex- deltas, barrier islands
effects of WAVE ENERGY - CORRECT ANSWER: excavates notches into rocks --->
unstable cliff---> rivers and cliff erosion ---> source of sand to the beach
2025 Actual Exam from Credible Sources with
Questions and Verified Correct Answers Golden
Ticket to Guaranteed A+ Verified by Professor
% of species in ocean - CORRECT ANSWER: 14% b/c oceans are more stable;
continental environments require constant adaptation from organisms
2 marine environments - CORRECT ANSWER: 1) pelagic realm 2) benthic realm
3 domains - CORRECT ANSWER: 1) bacteria 2) archaea 3) eukaryote
4 types of pollution - CORRECT ANSWER: petroleum, sewage, heavy metals, solid
waste/trash
6 kingdoms - CORRECT ANSWER: 1) bacteria 2) archaea 3) protista 4) fungi 5) plantae
6) animalia
Atlantic Coast - CORRECT ANSWER: depositional; passive margin; no plate boundary;
shoreline rises and ocean migrates inland
beach - CORRECT ANSWER: shore and nearshore; very active
benthic realm - CORRECT ANSWER: seafloor bottom dwellers or benthos; less
nutrients at the bottom, but MOST diversity
benthos - CORRECT ANSWER: bottom dwellers; live on seafloor such hydrothermal
vents and coasts (sponge, crabs, coral, sea star)
berm - CORRECT ANSWER: dry area at foot of coastal cliff; sand
, bio-degradation - CORRECT ANSWER: nature breaks apart and converts to natural
components
Cambrian Explosion - CORRECT ANSWER: an explosion of diversity led to period of 5-
10 million years of complex, multi-celled organisms
cause of sea level change (climate change) - CORRECT ANSWER: global warming =
sea levels rise
ice age = sea levels drop
cause of sea level change (plate tectonics) - CORRECT ANSWER: fast-spreading: sea
levels rise; ocean basin cannot hold
slow-spreading: sea levels drop
causes of sea level change - CORRECT ANSWER: 1) climate change 2) plate tectonics
Charles Moore - CORRECT ANSWER: discovered the North Pacific Garage Patch
(garbage build-up in North Pacific Gyre)
classification of marine organisms - CORRECT ANSWER: 1) plankton 2) nekton 3)
benthos
coast - CORRECT ANSWER: land extending inland as far as marine is seen; land
adjacent to the beach affected by the ocean
depositional coast - CORRECT ANSWER: flat coast b/c of passive margin; sediment
comes from rivers; SUBMERGENT COAST; ex- deltas, barrier islands
effects of WAVE ENERGY - CORRECT ANSWER: excavates notches into rocks --->
unstable cliff---> rivers and cliff erosion ---> source of sand to the beach
