Uma amostra de água do rio. A luva de mão recolhe água num tubo de ensaio. conceito de ecologia - Banco de fotos e imagens

A water sample from the river. Hand in glove collects water in a test tube. ecology concept

A water sample from the river. Hand in glove collects water in a test tube. ecology concept

A water sample from the river. Hand in glove collects water in a test tube. ecology concept

Sample water from the river for analysis. Hand in glove holding a test tube.ecology concept

Sample water from the river for analysis. Hand in glove holding a test tube.ecology concept

Sample water from the river for analysis. Hand in glove holding a test tube.ecology concept

Sample water from the river for analysis. Hand in glove holding a test tube.ecology concept

A water sample from the river. Hand in glove collects water in a test tube. ecology concept

A water sample from the river. Hand in glove collects water in a test tube. ecology concept

A water sample from the river. Hand in glove collects water in a test tube. ecology concept

A water sample from the river. Hand in glove collects water in a test tube. ecology concept

A water sample from the river. Hand in glove collects water in a test tube. ecology concept

A water sample from the river. Hand in glove collects water in a test tube. ecology concept

Sample water from the river for analysis. Hand in glove holding a test tube.ecology concept