1. when do we say that the materials is harmful?
2. When do we say that the material is useful?
Share
1. when do we say that the materials is harmful?
2. When do we say that the material is useful?
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Answer:
harmful ca not used again
useful can use again