Közeli - egy Petri-csésze, felnőtt növények, a laboratóriumban, a kezét egy tudós ültetett a környezetbe - Stock fotó és kép

Close-up of a Petri dish with a sample of plants from a pond for research in the hands of a laboratory worker, top view, on a background of water

A worker's gloved hand holds a test tube with a water sample against the background of a natural landscape. The concept of the content of pollutants in reservoirs with industrial wastewater discharges

A worker's gloved hand holds a test tube with a water sample against the background of a natural landscape. The concept of the content of pollutants in reservoirs with industrial wastewater discharges

Environmental biologist in a protective suit on the shore of a reservoir conducts an express test of river water for pollution

A laboratory assistants hand in a rubber glove pours a blue reagent from a flask into a test tube with water to analyze the level

Flasks and test tubes for analysis against the background of nature

A man in special protective clothing analyzes the water from the river using special reagents and test tubes on the street

Hand in a blue glove holds a glass container with green grass on a suitcase, black and white photo

Scientist conducting research to improve the soil

Case with tools and instruments for checking the environmental friendliness of the environment next to flasks and test tubes with reagents for soil and water research

Round glass to study the land in the hands of