Máscara de gas aislada sobre fondo negro con espacio para texto . - Foto e imagen de stock

A closeup shot of a man wearing a gas mask on a black background

Head with gas mask on dark background

Hacker with a laptop on his shoulder on a dark background. Cybercriminal.

Hacker with a laptop on his shoulder on a dark background. Cybercrime worker. Special Weapons Attack Team.

Doctors hand in blue medical gloves holds anti-virus face mask on white background for pandemic, airborne diseases, outbreak, Covid19 concept.

A woman in a white chemical protection suit shows a thumb on a white background, disinfection, pest control and pest control. Fighting insects and rodents. Successful pest control and destruction.

Sampling from open water. A scientist or biologist takes a water sample near an industrial plant. Water sample in a chemical test tube with a pipette.

A woman in a white chemical protection suit shows a thumb on a white background, disinfection, pest control and pest control. Fighting insects and rodents. Successful pest control and destruction.