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You wan to study the effect of different types of water on the growth of plants you choose the same type of plants. All plants are planted in the same type soil, placed in the same location, exposed to the same room temperature. You water each plant with one of the four different types of water (salt water, regular water, sugar water and distilled water.) after a two-week period, the height of the plants is measured. What is the manipulated, responding, controlled variable

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Histrionicus

Answer:

The correct answer is -

The manipulated - type of water

Responding - the height of plants

Controlled variable- regular water

Explanation:

The manipulated or independent variable is in scientific research is a variable that is changed or manipulated to see the response of the responding variable or dependent variable.

In this case type of water, plants get, is manipulated as a different type of water is provided to different plants. So variable that is measured or showing response to the manipulated variable is, is responding variable that is the height of the plants.  

The controlled variable is a variable that is set to see or compare the difference in normal condition and manipulated conditions that is regular water here in this case.

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