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e the data table and information below to answer the following questions.

A scientist used a laboratory model to test the effect of radiation, or the sun, in heating land and water on Earth. To do this experiment, 200 mL of water and dry sand were placed in to 2 separate 250-mL beakers. Each beaker was then placed under the same lamp. Temperature readings were taken of each substance every 2 minutes for 8 minutes.

Use the data table to answer the following questions.
Is this a controlled experiment and why?​

Sagot :

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