Yes, this is true!
Artifacts are objects made by humans. For example a vase or a plate used by Greeks in the ancient time is an artifact. Archaeologists do recover and analyse such vases or place in order to find out how people lived in the past and how they used those objects.
I believe it is Spain and France
1. Fracking
2. Air pollutants.
3. Decomposition of organic matter e.g. in landfills.
4. <span>Chlorofluorocarbons </span>mainly in refrigerants and air conditioners.
its 3 ok want to know how
