WVGSA Grade 5 Science Practice Questions - West Virginia General Summative Assessment Grade 5 Science Exam

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A small tree sapling weighing 2 kg is planted in a tub containing 90 kg of dry soil. After 5 years of regular watering, the tree weighs 75 kg, but the soil mass decreases by only 0.2 kg. Where did most of the tree's new mass come from?

Soil particles absorbed by roots Carbon dioxide gas from air and water absorbed by roots Earthworms living in the tub Sunlight absorbed by leaves

Correct Answer:

Carbon dioxide gas from air and water absorbed by roots

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