single - circulation passing through the heart once, double - circulation passing through the heart twice, diffusion - movement of particles down the concentration gradient, phloem - vessels transporting products of photosynthesis, xylem - vessels transporting water , blood - transport medium in humans, surface area - area of the outside of a cell/organism, volume - length x width x height gives us this measurement , oxygen - gas required for respiration, carbon dioxide - gas produced in respiration, vessel - tube transporting blood, heart - organ that pumps the blood ,

Leaderboard

Visual style

Options

Switch template

Continue editing: ?