Aquatic Ecosystems Worksheet
Explore the components, characteristics, and ecological importance of various aquatic ecosystems at a Grade 12 level.
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Aquatic Ecosystems Exploration
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Read each question carefully and provide thoughtful, detailed answers. Use your knowledge of aquatic ecosystems to complete the tasks.
1. Which of the following is NOT a primary factor in classifying aquatic ecosystems?
Salinity
Water depth
Temperature
Type of bedrock
2. The euphotic zone in an ocean is characterized by:
High pressure and low light
Sufficient light for photosynthesis
Absence of producers
Constant temperature year-round
1. The zone of a lake is the shallow, well-lit area close to the shore, where rooted plants can grow.
2. Estuaries are unique aquatic ecosystems where fresh water from rivers mixes with from the ocean.
3. are microscopic organisms that form the base of most aquatic food webs.
1. Briefly explain the difference between lotic and lentic aquatic ecosystems, providing an example of each.
2. Describe two significant ecological services provided by coral reefs.
1. Upwelling brings nutrient-rich waters from the deep ocean to the surface, supporting high productivity.
True
False
2. The abyssal zone is characterized by an abundance of photosynthetic organisms.
True
False
Examine the pond ecosystem diagram below and answer the questions that follow.
1. Identify two biotic components visible in the diagram.
2. Identify two abiotic components that would be present in this pond ecosystem but are not explicitly drawn.
Discuss the major threats facing aquatic ecosystems globally and propose at least three strategies to mitigate these threats. Include specific examples in your discussion.