This resource has 22 correlations with the National Standards.  
[HIDE CORRELATIONS]

• Life Science
  • The characteristics of organisms
    • Organisms have basic needs. For example, animals need air, water, and food; plants require air, water, nutrients, and light. (K-4)
    • Organisms can survive only in environments in which their needs can be met. (K-4)
  • Life cycles of organisms
    • Many characteristics of an organism are inherited from the parents of the organism, but other characteristics result from an individual's interactions with the environment. Inherited characteristics include the color of flowers and the number of limbs of an animal. (K-4)
  • Organisms and environments
    • An organism's patterns of behavior are related to the nature of that organism's environment, including the kinds and numbers of other organisms present, the availability of food and resources, and the physical characteristics of the environment.
    • All organisms cause changes in the environment where they live. Some of these changes are detrimental to the organism or other organisms, whereas others are beneficial.
  • Structure and function in living systems
    • Living systems at all levels of organization demonstrate the complementary nature of structure and function (5-8)
    • Important levels of organization for structure and function include cells, organs, tissues, organ systems, whole organisms, and ecosystems (5-8)
    • All organisms are composed of cells--the fundamental unit of life (5-8)
    • Cells carry on the many functions needed to sustain life. They grow and divide, thereby producing more cells. (5-8)
    • This requires that cells take in nutrients, which they use to provide energy for the work that cells do and to make the materials that a cell or an organism needs. (5-8)
    • Specialized cells perform specialized functions in multicellular organisms. (5-8)
    • Groups of specialized cells cooperate to form a tissue, such as a muscle. (5-8)
    • Different tissues are in turn grouped together to form larger functional units, called organs. (5-8)
    • Each type of cell, tissue, and organ has a distinct structure and set of functions that serve the organism as a whole. (5-8)
  • Reproduction and heredity
    • Reproduction is a characteristic of all living systems; because no individual organism lives forever, reproduction is essential to the continuation of every species. (5-8)
    • Some organisms reproduce asexually (5-8)
    • Some organisms reproduce sexually. (5-8)
  • Populations and ecosystems
    • A population consists of all individuals of a species that occur together at a given place and time. (5-8)
    • All populations living together and the physical factors with which they interact compose an ecosystem. (5-8)
    • The number of organisms an ecosystem can support depends on the resources available and abiotic factors, such as quantity of light and water, range of temperatures, and soil composition.
    • Given adequate biotic and abiotic resources and no disease or predators, populations (including humans) increase at rapid rates. (5-8)
    • Lack of resources and other factors, such as predation and climate, limit the growth of populations in specific niches in the ecosystem. (5-8)