How are marine ecosystems crucial to life on Earth?

Threats and Importance of Marine Ecosystems

Interactive Video
•
Biology
•
9th - 10th Grade
•
Hard

Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
They are a source of renewable energy.
They maintain the balance of life on Earth.
They are the primary source of land vegetation.
They provide fresh water.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What role do coral reefs play in marine ecosystems?
They are the largest source of ocean minerals.
They protect coastal communities from extreme weather.
They are the main producers of ocean salt.
They are a source of freshwater.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a significant threat to fish populations in the ocean?
Increased ocean salinity
Overfishing by commercial fleets
Lack of sunlight
Excessive seaweed growth
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the impact of noise pollution on marine mammals?
It increases their population.
It disrupts their communication and navigation.
It has no effect on them.
It helps them communicate better.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the status of all seven species of sea turtles?
They are thriving.
They are increasing in number.
They are endangered or critically endangered.
They are extinct.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What percentage of the world's oxygen is provided by the oceans?
75%
50%
25%
10%
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a major consequence of ocean acidification?
Enhanced coral growth
Harm to marine life, especially crustaceans
Improved water clarity
Increased fish populations
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