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A biofilm composed of a community of microorganisms glued by mucilage to a surface.
Electronmicrograph showing a blood clot composed of fibrin, red blood cells, and tissue debris.
Functional MRI Scans These scans of human brains show localized average increases in neural activity
Children with Down syndrome have a small head, short, thick neck, flattened face, and a distinctive ...
In middle childhood, children are increasingly able to understand other people’s thoughts, ...
Examples of how the recessive gene for straight hair passes from parents to children