medical root words. medical dictionary online. Many terms frequently used in science and medicine are derived from latin words. By combining the root words with, prefixes and suffixes many of the meanings of the terms can be deciphered. Use the following resources to better understand medical terms: Medical Roots or Stems.
How Chameleons Change Color. In addition to being responsive to light, chameleons change color when they are frightened and in response to temperature and other environmental changes. Hormones that affect special pigment-bearing cells in the skin cause the color change.
[Photos: How Chameleons Change Color] Habitat. Chameleons live in Madagascar, Africa, Spain, Portugal and Asia in rain forests, savannas, semi-deserts and steppes, according to the San Diego Zoo. They typically stay in trees or bushes, though some species do live on the ground.