Across
- 2. the invention of ________ resulted in development of new modes of transport
- 7. _______is a human made resource.
- 8. some substances have ____value sum don't
Down
- 1. it is an example of non renewable resources.
- 3. people are____resource.
- 4. ______makes an object or substance are resource.
- 5. it means exclusive right over any idea or invention
- 6. ________ of the resource is the amount of resources available for us.