Environmental science / 
edit by Tracey Greenwood...]et al.]. 
 - Hamilton :  Biozone,  2006. 
 - 140 p. :  illus ;  30 cm. 
 - Biology Modular Workbook Series. .
 - Biology Modular Workbook Series. .
<br/><br/>The Earth's systems -- Ecosystems -- Populations -- Investigating ecosystems -- land, water and energy -- pollution and global change. 
<br/><br/><label>ISBN: </label>9781877462153 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecosystems.<br/>Environmantal science--Biology.<br/>Physical and biological systems.