Which is essential for finding the biomass of spinach

if you have options

your answer is going to be

To calculate the dry weight of the entire spinach plant

Biomass can be defined as the total quantity or the total weight of the organism in a given area or volume. In order to calculate the biomass of the plant dry weight of the plant parts such as its stem, leaves is taken into consideration. The net biomass does not include water or the moisture content of the plant.

i thinking chemical change

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.