Indicator organisms are bacteria which are found in soil and water and in the faeces of animals.

BBC: Carrots

If tissue-culture technology, a predecessor to genetically modifying organisms, is any indicator, the payoff for Africa could be huge.

FORBES: Millions Served

We need to illuminate the types of responses by individual organisms elicited by different noises, likely focusing mostly on keystone, indicator, and species already identified as endangered.

UNESCO: MEDIA SERVICES