Frank ICSE Solutions for Class 9 Biology - Understanding Ecosystems PAGE NO: 94Solution 1: Environment is the sum of all external conditions and influences that affect organisms. The environment may be divided into biotic i.e. living and abiotic i.e. non-living components.Solution 2: Ecosystems are units consisting of living things and their specific habitats in the … [Read more...] about Frank ICSE Solutions for Class 9 Biology – Understanding Ecosystems