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conduct an investigation to provide evidence that living things are made of cells, either one cell or many different numbers and types of cells
develop and use a model to describe the structure and function of a cell as a whole and ways parts of cells contribute to the function
use argument supported by evidence for how the body is a system of interacting subsystems composed of groups of cells
construct a scientific explanation based on evidence for the role of photosynthesis in the cycling of matter and flow of energy into and out of organisms
develop a model to describe how food is rearranged through chemical reactions forming new molecules that support growth, release energy, or both, as this matter moves through an organism