The insects clustered around the light is an example of A response to a stimulus. The insects are attracted to the light, so the flocked towards it.
A chemical bond to form in a compound must be formed my two or more atoms attracted to each other.
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The sun provides the energy for photosynthesis. Cells use sugar as a source of energy. The products of cellular respiration are CO2 and H2O. These products are used by plants to make sugar and oxygen through photosynthesis.
Scientists classify rocks based on texture, composition, and how the rocks formed.] Rocks are classified by how they formed.
