Answer:
A coral reef is an underwater ecosystem characterized by reef-building corals. Reefs are formed of colonies of coral polyps held together by calcium carbonate. Most coral reefs are built from stony corals, whose polyps cluster in groups. ... Coral reefs flourish in ocean waters that provide few nutrients.
Answer: a. Apprenticeship
Explanation:
Apprenticeship is a system of training where job skills are taught by combination of classroom teaching and on-the-job training.
Neolithic revolution is the big turning point in human history. The change from hunting to gathering to agriculture led to permanent settlements, the establishment of social classes, and the growth of civilizations.
The authority to make laws, when other members cannot
Advertising, a promotional tool uses paid, non-personal presentation and promotions by an identified sponsor.
Advertising is the practice and techniques employed to carry interest to a services or products. advertising pursuits to place a product or service in the highlight in hopes of drawing it attention from customers.
Examples of above-the-line advertising and marketing are television, radio, & newspaper commercials. under-the-line advertising includes conversion-centered activities which can be directed in the direction of a particular target group. Examples of beneath-the-line advertising are billboards, sponsorships, in-shop marketing, etc.
Learn more about advertising here:brainly.com/question/1658517
#SPJ4
