
Sea Otters and Kelp Forests

Interactive Video
•
Biology, Science, Geography
•
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
Why are sea otters considered important to the ecosystem?
They have a blubber layer to keep warm.
They can survive without eating much.
They are a major predator that helps maintain balance.
They are the largest marine mammals.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary reason for the absence of sea otters in Oregon?
They could not adapt to the environment.
They were outcompeted by other predators.
They migrated to warmer waters.
They were hunted to extinction.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What makes a kelp forest similar to a terrestrial forest?
It does not support any wildlife.
It has a canopy and understory.
It is made entirely of trees.
It is found only in cold climates.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What percentage of Oregon's kelp forests are located on the south coast?
60%
75%
50%
90%
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What has caused the decline of kelp forests in Oregon?
Lack of sunlight reaching the ocean floor.
Overpopulation of sea urchins.
Pollution from nearby cities.
Overfishing of salmon.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main diet of purple sea urchins that affects kelp forests?
Small fish
Plankton
Kelp
Coral
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do sea otters help maintain the balance in kelp forests?
By controlling the population of invertebrates.
By eating the kelp directly.
By increasing the water temperature.
By providing shelter for fish.
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