Three Main Types of Relationships Can Exist Between Entities: a One-To-One

question 61

True/False

Three main types of relationships can exist between entities: a one-to-one relationship,abbreviated 1:1;a one-to-many relationship,abbreviated 1:M;and a many-to-many relationship,abbreviated M:N.

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Definitions:

Decomposers

Microbial heterotrophs that break down dead organic material and use the decomposition products as a source of energy. Also called saprotrophs or saprobes.

Ecosystem

A community of living organisms in conjunction with the nonliving components of their environment, interacting as a system.

Available Nutrients

Nutrients present in the environment that can be readily absorbed and used by organisms for growth and metabolism.

Eukaryotic

Pertaining to cells and organisms that have a nucleus enclosed within membranes, distinct from prokaryotic cells which lack such a nucleus.