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THE ECOSYSTEM (FOOD CHAINS AND FOOD WEBS)

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Understanding food chains and food webs Food chains and food webs are both essential concepts in ecology that describe the flow of energy and nutrients through an ecosystem, but they differ in structure and complexity.   Food Chain:  is a linear sequence that illustrates how energy and nutrients flow from one organism to another within an ecosystem, showing a simple, single pathway of feeding relationships. Structure It typically consists of a few trophic levels:   Producers: Organisms that produce their own food (e.g., plants and phytoplankton).   Primary Consumers: Herbivores that eat producers (e.g., rabbits eating grass).  Secondary Consumers: Carnivores that eat primary consumers (e.g., foxes eating rabbits). Tertiary Consumers: Top predators that eat secondary consumers (e.g., hawks eating foxes). Simplicity : Food chains are straightforward and only illustrate one pathway of energy transfer, making them easier to understand but less representative of real...
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THE ECOSYSTEM (BIOTIC AND ABIOTIC FACTORS)

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Importance of interaction between biotic and abiotic factors in the local environment. The interaction between biotic (living) and abiotic (non-living) factors in local environments is fundamental to the health and functioning of ecosystems. These interactions shape the environment and influence the survival, growth, and behavior of organisms.  1. Nutrient Cycling    - Organic Matter Decomposition: Biotic factors, such as decomposers (bacteria, fungi), break down dead organic matter, recycling nutrients back into the soil. This process is essential for soil fertility, enabling plants (abiotic factor) to absorb minerals and nutrients needed for growth.     - Plant Nutrient Uptake: Plants rely on abiotic factors like soil composition and water availability to absorb nutrients, which are critical for photosynthesis and energy production.   2. Food Web Dynamics    - Energy Flow: Producers (plants) convert solar energy (abiotic factor) into chemical ...
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THE ECOSYSTEMS

Terminologies of the ecosystem and characteristics of the three ecosystem present in Namibia.   Key Terminologies of Ecosystems 1. Ecosystem: A biological community interacting with its physical environment; includes all living organisms and their non-living environment.    2. Biodiversity: The variety of life in a particular habitat or ecosystem, encompassing different species of plants, animals, and microorganisms. 3. Habitat: The natural environment where a species or community of species lives. 4. Trophic Levels: Different levels in a food chain, including producers (plants), primary consumers (herbivores), secondary consumers (carnivores), and decomposers. More on types of ecosystem  https://vm.tiktok.com/ZMhPKcVc9/ Characteristics of Three Key Ecosystems in Namibia 1. Desert Ecosystem (Namib Desert):     -Climate: Arid, with very little rainfall (less than 10 mm/year in some areas), high temperatures during the day, and cooler nights.    -...
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