Based on the table showing weight changes in mushroom slices and spinach leaves after sun exposure, what can be inferred about the composition of these food samples?

Here is the completed table and inference based on the provided activity:

Observation:

Food sample	Initial weight of the food sample	Weight after exposure to sunlight
Mushroom slices	$100 \text{ g}$	$80 \text{ g}$
Spinach leaves	$100 \text{ g}$	$70 \text{ g}$

Inference:
The decrease in the weight of both mushroom slices and spinach leaves after exposure to sunlight indicates that water was present in the food samples. This water evaporated due to the heat from the sunlight, causing the observed reduction in mass. Therefore, the experiment confirms the presence of water in these food samples.