Macrophytes Were Sampled at Each of 3 Depths in a Particular

question 17

Short Answer

Macrophytes were sampled at each of 3 depths in a particular region of Lake Opinicon. The macrophages
obtained at each depth were classified as to their genus and their dry weights were also determined. One
question that was studied was whether or not macrophyte dry weight differs at different depths and if the
dry weight depended on the type of macrophage. The number of explanatory variables in this part of the
study is ___________.
________________________________________

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Definitions:

Liquid at Room Temperature

A state in which a substance exists in a fluid form at approximately 20 to 25 degrees Celsius, indicating its physical property under standard conditions.

Childhood Obesity

A serious medical condition affecting children and adolescents characterized by an excessive accumulation of body fat.

Screen Time

The amount of time spent using devices with screens, such as computers, smartphones, and televisions, often discussed in the context of health and wellness.

Physical Activity

Bodily movement produced by skeletal muscles that requires energy expenditure and can produce progressive health benefits.