Classroom Resource

Drivers of Extinction

Subject Area

Science

Grade(s)

7

Overview

Students explore drivers of extinction across Earth’s major biomes, including human-to environment interactions that threaten biodiversity and seek solutions to mitigate habitat loss and prevent extinction. As a result, they develop research-based action steps critical to protecting a certain species and incorporate key findings into their culminating conservation pamphlets. This lesson is part of the Engaging in the Fight Against Extinction unit.

Science (2015) Grade(s): 7

SC15.7.6

Analyze and interpret data to provide evidence regarding how resource availability impacts individual organisms as well as populations of organisms within an ecosystem.

Unpacked Content

UP:SC15.7.6

Vocabulary

  • Analyze
  • Interpret
  • Evidence
  • Resource(s)
  • Organism(s)
  • Ecosystem
  • Biotic
  • Abiotic
  • Populations (e.g., sizes, reproduction rates, growth information)
  • Competition

Knowledge

Students know:
  • Organisms, and populations of organisms, are dependent on their environmental interactions both with other living (biotic) things and with nonliving (abiotic) things.
  • In any ecosystem, organisms and populations with similar requirements for food, water, oxygen, or other resources may compete with each other for limited resources, access to which consequently constrains their growth and reproduction.
  • Growth of organisms and population increases are limited by access to resources.

Skills

Students are able to:
  • Organize the given data to allow for analysis and interpretation of relationships between resource availability and organisms in an ecosystem.
  • Analyze the organized data to determine the relationships between the size of a population, the growth and survival of individual organisms, and resource availability.
  • Determine whether the relationships provide evidence of a causal link between factors.
  • Interpret the organized data to make predictions based on evidence of causal relationships between resource availability, organisms, and organism populations.

Understanding

Students understand that:
  • Cause and effect relationships may be used to predict phenomena in natural or designed systems.
  • Causal links exist between resources and growth of individual organisms and the numbers of organisms in ecosystems during periods of abundant and scarce resources.

Scientific and Engineering Practices

Analyzing and Interpreting Data

Crosscutting Concepts

Cause and Effect
Science (2015) Grade(s): 7

SC15.7.7

Use empirical evidence from patterns and data to demonstrate how changes to physical or biological components of an ecosystem (e.g., deforestation, succession, drought, fire, disease, human activities, invasive species) can lead to shifts in populations.

Unpacked Content

UP:SC15.7.7

Vocabulary

  • Empirical evidence
  • Patterns
  • Data
  • Ecosystem
  • Populations
  • Physical components (e.g., water, air, temperature, sunlight, soil, etc.)
  • Biological components (e.g., plants, animals, etc.)
  • Phenomena (e.g., deforestation, succession, drought, fire, disease, human activities, invasive species, etc.)

Knowledge

Students know:
  • Ecosystems are dynamic in nature and can change over time.
  • Disruptions to any physical or biological component of an ecosystem can lead to shifts in all its populations.
  • Changes in the physical or biological components of an ecosystem (e.g., rainfall, species introduction) can lead to changes in populations of species.

Skills

Students are able to:
  • Demonstrate the scientific idea that changes to physical or biological components of an ecosystem can affect the populations living there.
  • Identify and describe the given evidence needed to demonstrate the scientific idea that changes to physical or biological components of an ecosystem can affect the populations living there.
  • Evaluate the given evidence, identifying the necessary and sufficient evidence for supporting the scientific idea.
  • Use reasoning to connect the evidence and support an explanation using patterns in the evidence to predict the causal relationship between physical and biological components of an ecosystem and changes in organism populations.

Understanding

Students understand that:
  • Changes in the amount and availability of given resource may result in changes in the population of an organism.
  • Changes in the amount or availability of a resource may result in changes in the growth of individual organisms.
  • Resource availability drives competition among organisms, both within a population as well as between populations.
  • Resource availability may have an effect on a population's rate of reproduction.

Scientific and Engineering Practices

Analyzing and Interpreting Data

Crosscutting Concepts

Stability and Change
Link to Resource
https://www.nationalgeographic.org/lesson/drivers-extinction/

CR Resource Type

Lesson/Unit Plan

Resource Provider

National Geographic
Accessibility

Accessibility

Text Resources: Content is organized under headings and subheadings
License

License Type

Custom

Custom License Type (URL)

https://www.nationalgeographic.org/terms-of-service/

Approved Date

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