Severity: Notice
Message: Trying to get property of non-object
Filename: models/Mbooks.php
Line Number: 2958
Backtrace:
File: /var/www/html/application/models/Mbooks.php
Line: 2958
Function: _error_handler
File: /var/www/html/application/controllers/Book.php
Line: 331
Function: get_pocket_count
File: /var/www/html/index.php
Line: 299
Function: require_once
Buku sedia untuk dipinjam.
( 10 / 10 unit )
Tempoh pinjaman (hari): 28
oleh Young Scientists
Penerbit -
Kategori - Kanak-kanak
A system is a whole consisting of parts that work together to perform a function(s). There are natural systems as well as man-made systems. Examples of systems in nature are the digestive and respiratory systems. Examples of manmade systems are electrical and decimal systems. Understanding these systems allows Man to understand how they operate and how parts influence and interact with one another to perform a function.