A blue line indicates that there is water running through the valley. If there is not a blue line the V pattern indicates which way water flows.
The answer to your question should be the last option (waste products) if not i would go with the first option but im pretty sure is the last option
Answer:
Gypsum and limestone.
Explanation:
Mining of valuable stones such as gypsum and limestone occur in my location. These valuable stones are used in the formation of beautiful tiles and in painting materials. Due to extraction of these valuable stones, erosion of the land occur as well as air pollution increases by the use of machines for extracting these minerals so it caused adverse affect on the environment so this mining has to be limited in order to both save the environment and get benefits from these minerals
Cycling of nutrients and flow of energy
It might be C but dont quote me on that
