Close-up environmentalist hand of a researcher in a process of taking a sample of contaminated water from a lake
Schlüsselwörter
ecologist,
pollution,
water,
sample,
contaminated,
chemist,
test tube,
laboratory assistant,
river,
lake,
test,
blue,
nature,
scientist,
open air,
canvasses,
vegetation,
green,
to sit,
mask,
squat,
glove,
shore,
measuring,
liquid,
medicals,
biotechnology,
adviser,
person,
chemical,
agricultural,
hand,
collecting,
danger,
natural,
substance,
importance,
control,
biologist,
science,
equipment,
glasses,
tube,
protective,
canvasses,
infection,
microbiology
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