Final answer:
The act of pouring water into soil is primarily related to the biceps brachii muscle in the upper arm.
Explanation:
The act of pouring water into the soil around a plant is mostly related to the biceps brachii muscle.
When you pour water, you are using the action of flexing your arm, which is primarily performed by the biceps brachii muscle.
This muscle is located in the upper arm and is responsible for movements like bending the elbow, making it the main muscle involved in the action of pouring water.
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