Populations exist in a constantly shifting system. Some relationships help keep communities in balance; other relationships can change those communities completely. In ecology, INTERDEPENDENCE refers to the idea that the populations of species in the ecosystem depend on each other.
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IN THIS EPISODE:
-Competition
-Predation (Predator & Prey Adaptations)
-Cooperation (Symbiotic Relationships)
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SCIENCE STANDARDS:
NGSS
MS-LS2-1
Analyze and interpret data to provide evidence for the effects of resource availability on organisms and populations of organisms in an ecosystem. Emphasis is on cause and effect relationships between resources and growth of individual organisms and the numbers of organisms in ecosystems during periods of abundant and scarce resources.
MS-LS2-2
Construct an explanation that predicts patterns of interactions among organisms across multiple ecosystems. Emphasis is on predicting consistent patterns of interactions in different ecosystems in terms of the relationships among and between organisms and abiotic components of ecosystems. Examples of types of interactions could include competitive, predatory, and mutually beneficial.
TEKS
SCI.5.9.A
Organisms and environments. The student knows that there are relationships, systems, and cycles within environments. The student is expected to: observe the way organisms live and survive in their ecosystem by interacting with the living and nonliving components
SCI.8.11.A
Organisms and environments. The student knows that interdependence occurs among living systems and the environment and that human activities can affect these systems. The student is expected to: investigate how organisms and populations in an ecosystem depend on and may compete for biotic factors such as food and abiotic factors such as quantity of light, water, range of temperatures, or soil composition
SCI.9-11.B.12.A
Science concepts. The student knows that interdependence and interactions occur within an environmental system. The student is expected to: interpret relationships, including predation, parasitism, commensalism, mutualism, and competition, among organisms
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