Pollution, littering.
You call the authorities in your area
The Dumping Ground.
Yes, we can call kabadiwala a friend of the environment because he recycles everything in our environment{wastes}.
Flammable.
Opaque substances that are used to color other materials are called pigments. Some call them dyes.
They are the end products of the reaction. The substances you start with are the reactants.
Call 911.You should not let them sell a harmful product
This is a chemical reaction. When substances change you can call it chemical.
Chemical
You can form a team group! Togetther you can clean up waste. And you may call the POLICE if needed!!
These substances are called "vaccines".
The substances before a chemical reaction takes place are called reactants.