a.What is classification of living things? b. State four ways each by which the following groups of organisms are of economic importance in their habitats: ...

Answer Details

a.Classification of living things is the grouping/arrangement of organisms; with similar characteristics based on structural/genetic/cellular/evolutionary trends; for easy identification.

bi. -cause various plant/animal diseases;
-act as decomposers;
-recycle nutrients;
-bring about fermentation in breweries;
-used in baking industries;
-serve as source of food;
-are used in pharmaceutical industries/production of antibiotics/vitamins;
-destroy various substances/cloth/paper/wood/food

bii. -are involved in nutrient recycling;
-purify the environment/reduce greenhouse effects;
-provide shade/shelter;
-provide food;
-provide oxygen;
-prevent erosion;
-are sources of timber for building/construction;
-provide materials for pharmaceuticals/production of drugs.

c.