Most of our early knowledge about the brain came from: A. naturalistic observation of primates. B. naturalistic observation of children in different cultures. C. case studies of brain damaged individuals. D. case studies of normal individuals.
Coral reef definition: A coral reef is a long narrow mass of coral and other substances, the top of which is... | Meaning, pronunciation, translations and examples English Dictionary | Thesaurus | Translator | Grammar | Scrabble | Blog
Coral reefs are colonies of individual animals called polyps, which are related to sea anemones. The polyps, which have tentacles to feed on plankton at night, play host to zooxanthellae, symbiotic algae that live within their tissues and give the coral its color.