In Ecosystems, Why Is the Term Cycling Used to Describe

question 27

Multiple Choice

In ecosystems, why is the term cycling used to describe material transfer, whereas the term flow is used for energy exchange?

• A) Materials are repeatedly used, but energy flows through and out of ecosystems.
• B) Both material and energy are recycled and are then transferred to other ecosystems as in a flow.
• C) Materials are cycled into ecosystems from other ecosystems, but energy constantly flows within the ecosystem.
• D) Both material and energy flow in a never-ending stream within an ecosystem.
• E) None of the choices is correct.

---

Definitions:

Main Memory

The primary storage area in a computer where data and programs that are in active use are stored; also known as RAM (Random Access Memory).

Central Processing Unit

The primary component of a computer that performs most of the processing inside a computer, executing instructions from programs.

Operating System

The software that manages hardware resources and provides common services for computer programs, acting as an intermediary between users and the computer hardware.

Memory Management

The process of controlling and coordinating computer memory, involving the allocation and deallocation of memory blocks to programs to ensure optimal performance.