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Science and Technology/Engineering | Grade : 3
Discipline - Life Science
Core Idea - Biological Evolution: Unity and Diversity
[3.LS.4.3] - Construct an argument with evidence that in a particular environment some organisms can survive well, some survive less well, and some cannot survive. Clarification Statement: Examples of evidence could include needs and characteristics of the different organisms (species) and habitats involved.
[3.LS.4.5] -
Provide evidence to support a claim that the survival of a population is dependent upon reproduction.
State Assessment Boundary: Details of reproduction are not expected in state assessment.
[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.
[8.LS.1.5] -
Construct an argument based on evidence for how environmental and genetic factors influence the growth of organisms. Clarification Statements: Examples of environmental conditions could include availability of food, light, space, and water. Examples of genetic factors could include the genes responsible for size differences in different breeds of dogs, such as Great Danes and Chihuahuas. Examples of environmental factors could include drought decreasing plant growth, fertilizer increasing plant growth, and fish growing larger in large ponds than they do in small ponds. Examples of both genetic and environmental factors could include different varieties of plants growing at different rates in different conditions. State Assessment Boundary: Methods of reproduction, genetic mechanisms, gene regulation, biochemical processes, or natural selection are not expected in state assessment.
[8.LS.4.4] -
Use a model to describe the process of natural selection, in which genetic variations of some traits in a population increase some individuals’ likelihood of surviving and reproducing in a changing environment. Provide evidence that natural selection occurs over many generations.
Clarification Statements: The model should include simple probability statements and proportional reasoning. Examples of evidence can include Darwin’s finches, necks of giraffes, and peppered moths. State Assessment Boundary: Specific conditions that lead to natural selection are not expected in state assessment.