Sponsored photos by

Woman looking at water in a glass through magnifying glass
Frozen lake in the pretty French Alpine village of Les Contamines-Montjoie
Environmental engineers inspect water quality,Bring water to the lab for testing,Check the mineral content in water and soil,Check for contaminants in water sources.
Close-up of white mold or efflorescence on a damp concrete wall. The image shows surface texture damage due to moisture, commonly found in buildings with poor ventilation or water leakage.
Examine bacteria in petri dishes in the laboratory. Selective focus. nature.

Free stock photoscontaminate (155)