statement or event that warns of something or that serves as cautionary example. Acts of telling someone about possible danger.

true oyster. An edible marine mollusk. raise, dredge, or gather oysters.

To make, or become, something better.

made up from several elements. Series of buildings that are walled or fenced off. To make something from various parts or components.

keep safe from harm or injury.

Hard; not easy; you need to work hard to do it.

place, person, or thing from which something comes or can be obtained. To get, e.g. a raw material, from somewhere.

Small molecule (not a protein but sometimes a vitamin) essential for the activity of some enzymes.

To think or accept that something is true.

Giving an advantage, having a helpful effect.

substance that provides nourishment essential for maintenance of life and for growth. Chemical living things need to be healthy.

put forward for consideration.

Tool used to calculate the size of something. determine size or amount.

Act of dividing or separating into parts.

To make clear or easy to understand by describing.