The website has the complete lesson note for all the subjects in secondary school but this piece showcases the SS1 Biology Lesson Note on Freshwater Habitat. You can use the website search button to filter out the subject of interest to you.
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TOPIC: FRESHWATER HABITAT AND TERRESTRIAL MASH
CONTENT:
Sub-Topic 1: CHARACTERISTICS OF FRESHWATER HABITAT
The freshwater habitat includes the lakes, ponds, streams, springs, and rivers. These water bodies are known for low salt content or low salinity. The animals and plants in freshwater habitat vary from the ones in the estuarine habitat. This is due to the salinity factor.
Some characteristics of freshwater habitat include:
TYPES OF FRESHWATER
Freshwater is divided into two broad types:
The fluctuation of the tide allows for a unique environment along shorelines. The current continually circulates and replenishes a rich supply of nutrients along beaches, but organisms living there must be adapted to both buffeting waves and frequent shifts from open air to complete submersion. Marine organisms adapt to the constantly changing surroundings in a variety of ways. Starfish use suction-cup feet, barnacles fix permanently to large objects like rocks and boats, and seaweed anchors firmly to the ocean floor. When the tide goes out, pockets of water remain trapped in rocks, depressions in the sand, and natural basins called tidal pools, like the one shown here during low tide.
EVALUATION
Sub-Topic 2: FRESH WATER ORGANISM
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