2020 EN-LS2-7

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The Oklahoma Academic Standards for Science (OAS-S) are three-dimensional performance expectations representing the things students should know, understand, and be able to do to be proficient in science and engineering. Performance expectations are considered standards and include a science and engineering practice (indicated in blue and represent everyday skills of scientists and engineers), disciplinary core ideas (represented in orange and represent science ideas used by scientists and engineers), and a crosscutting concept (indicated in green and represent ways of thinking like scientists and engineers).

Each dimension in the OAS-S grows in complexity and sophistication across the grades. To learn more about the prior knowledge and skills students have developed (or future knowledge/skills) associated with that specific dimension, each section in the standard below is hyperlinked to that specific vertical learning progression page.

Environmental Science (EN) Ecosystems: Interactions, Energy, and Dynamics
EN.LS2.7 Design, evaluate, and refine a solution for reducing the impacts of human activities on the environment biodiversity.
Clarification Statement: Examples of human activities can include habitat destruction, pollution, introduction of invasive species, overexploitation, climate change, overpopulation, urbanization, and building dams.
Assessment Boundary: N/A
Science and Engineering Practices	Disciplinary Core Ideas	Crosscutting Concepts
Designing Solutions Design, evaluate, and refine a solution to a complex real-world problem, based on scientific knowledge, student-generated sources of evidence, prioritized criteria, and tradeoff considerations.	Ecosystem Dynamics, Functioning, and Resilience Anthropogenic changes (induced by human activity) in the environment can disrupt an ecosystem and threaten the survival of some species. Biodiversity and Humans Biodiversity is increased by the formation of new species (speciation) and decreased by the loss of species (extinction). Humans depend on the living world for the resources and other benefits provided by biodiversity, but human activity is also having adverse impacts on biodiversity. Thus, sustaining biodiversity so that ecosystem functioning and productivity are maintained is essential to supporting and enhancing life on Earth. Sustaining biodiversity also aids humanity by preserving landscapes of recreational or inspirational value. Developing Possible Solutions When evaluating solutions it is important to take into account a range of constraints including cost, safety, reliability and aesthetics and to consider social, cultural and environmental impacts.	Stability and Change Much of science deals with constructing explanations of how things change and how they remain stable.
Connections to other Performance Expectations in Environmental Science
Human Impacts on Biodiversity and Earth's Systems