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Soil pH meter and soil fertility meter for cultivation.p value It is an indicator of plant nutrient absorption. Different plants require different pH values.
DART Asteroid Deflection Test Mission. This image elements furnished by NASA. 3d rendering
The doctor wearing blue medical gloves holds the Grooved Director, a butterfly-tipped probe used to stabilize the tongue during the interlacing tongue procedure. isolated on white
Instillation of medicinal drops in the eye of a child to treat conjunctivitis and blockage of the tear duct. Probing of the lacrimal canal, treatment.
DART Asteroid Deflection Test Mission. This image elements furnished by NASA. 3d rendering

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