Standards Map

Science and Technology/Engineering > Grade 7 > Life Science
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Science and Technology/Engineering | Grade : 7

Discipline - Life Science

Core Idea - Ecosystems: Interactions, Energy, and Dynamics

[7.LS.2.1] - Analyze and interpret data to provide evidence for the effects of periods of abundant and scarce resources on the growth of organisms and the size of populations in an ecosystem.

Resources:

Predecessor Standards:

  • 3.LS.4.4
    Analyze and interpret given data about changes in a habitat and describe how the changes may affect the ability of organisms that live in that habitat to survive and reproduce. Clarification Statements: Changes should include changes to landforms, distribution of water, climate, and availability of resources; Changes in the habitat could range in time from a season to a decade; While it is understood that ecological changes are complex, the focus should be on a single change to the habitat.

Successor Standards:

  • HS.LS.2.1
    Analyze data sets to support explanations that biotic and abiotic factors affect ecosystem carrying capacity. Clarification Statements: Examples of biotic factors could include relationships among individuals (e.g., feeding relationships, symbioses, competition) and disease. Examples of abiotic factors could include climate and weather conditions, natural disasters, and availability of resources. Example data sets can be derived from simulations or historical data.

Same Level Standards:

  • 7.SP.A.1
    Understand that statistics can be used to gain information about a population by examining a sample of the population; generalizations about a population from a sample are valid only if the sample is representative of that population. Understand that random sampling tends to produce representative samples and support valid inferences.
  • 7.LS.2.2
    Describe how relationships among and between organisms in an ecosystem can be competitive, predatory, parasitic, and mutually beneficial and that these interactions are found across multiple ecosystems. Clarification Statement: Emphasis is on describing consistent patterns of interactions in different ecosystems in terms of relationships among and between organisms.
  • 7.LS.2.4
    Analyze data to provide evidence that disruptions (natural or human-made) to any physical or biological component of an ecosystem can lead to shifts in all its populations. Clarification Statement: Focus should be on ecosystem characteristics varying over time, including disruptions such as hurricanes, floods, wildfires, oil spills, and construction.
  • 7.LS.2.6
    Explain how changes to the biodiversity of an ecosystem—the variety of species found in the ecosystem—may limit the availability of resources humans use. Clarification Statement: Examples of resources can include food, energy, medicine, and clean water.