What percentage of the Earth's surface is covered by oceans?
71%
84%
52%
25%
The deepest point in the ocean, located 10,935 meters below the surface of the western Pacific Ocean, is called the...
Tonga Trench
Puerto Rico Trench
The Deep Point
Challenger Deep
What is the warmest ocean, ranging from 72 to 82 degrees Fahrenheit?
Atlantic
Pacific
Indian
Southern
Order these oceans from largest to smallest.
Indian
Southern
Pacific
Atlantic
Climate change can lead to rising sea levels, endangering coastal areas and human infrastructure.
False
True
What is the main cause of sea level rises?
dispersion, caused by too many fish in the sea
melting glaciers and ice caps
changes in ocean currents
increased rain
What approximate percentage of human-produced CO₂ emissions do oceans absorb to counter climate change?
90-100%
10-20%
25-30%
50-60%
How does climate change contribute to the phenomenon known as coral bleaching?
By reducing the availability of sunlight
By decreasing ocean temperatures
By increasing ocean saltiness
By increasing ocean temperatures
The term for the sustainable practice of breeding and raising fish in controlled environments is known as...
Overfishing
Aquaculture
Bycatch
Trawling
Plastic pollution in the oceans poses a big threat to marine life, as animals can ingest or become entangled in plastic.
False
True
Which human activity is a major contributor to plastic pollution in the oceans?
Recycling plastic waste
Single-use plastic consumption
Implementing plastic bag bans
Using biodegradable packaging
Ocean acidification results from excess carbon dioxide absorption in the ocean, lowering pH levels.
False
True
Which agreement aims to cut greenhouse gases to fight climate change and its impact on the oceans?
London Agreement
Paris Agreement
New York Agreement
Madrid Agreement
Which fish species is often overfished due to high demand for its meat and fins?
Tuna
Sardines
Rainbow Trout
Pacific Cod
Which fishing method is particularly harmful to marine ecosystems and often leads to overfishing?
Trawling
Harpoon fishing
Handline fishing
Pole and line fishing
