Question

Useful materials

Harmful materials
Answer the following:
1. Which materials are useful? When do they become useful?
2. Which materials are harmful? When do they become harmful?
5

Answer 1

Step-by-step explanation:

The materials that are useful are bamboo, plastic, steel, concrete, fabric , textiles, stones, brick, repurposed wood e.t.c.

Materials become useful, when those that uses it use it right and to achieve a specific purposes base on the properties the materials poseses.

The materials that are harmful include asbestos, Mercury containing devices, lead based paints, household hazardous waste, light system, mold, refrigerant containing system.

Materials become harmful when they contain substances or properties that is dangerous or can harm human beings and cause damage to cells.