ES Ch 7 Review
Flashcard
•
Science
•
11th - 12th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
How are coral reefs formed?
Back
Coral reefs are formed by the secretion of calcium carbonate by tiny marine animals called corals.
2.
FLASHCARD QUESTION
Front
Which of the following is not considered a threat to rivers today?
Back
High levels of dissolved oxygen in fast moving water are not considered a threat to rivers.
3.
FLASHCARD QUESTION
Front
What zone contains a higher, diverse level of organisms?
Back
The littoral zone contains a higher, diverse level of organisms.
4.
FLASHCARD QUESTION
Front
Which of these is NOT a characteristic of wetlands?
Back
Wetlands are not found only as inland freshwater environments.
5.
FLASHCARD QUESTION
Front
What condition can result from an increase in nutrients like phosphorous or nitrates in aquatic ecosystems?
Back
Eutrophication can result from an increase in nutrients in aquatic ecosystems.
6.
FLASHCARD QUESTION
Front
Define Eutrophication.
Back
Eutrophication is the process by which water bodies become overly enriched with nutrients, leading to excessive growth of algae.
7.
FLASHCARD QUESTION
Front
What is the role of calcium carbonate in coral reefs?
Back
Calcium carbonate is secreted by corals to form their skeletons, which contribute to the structure of coral reefs.
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