Which of the following is not a control for this experiment?
a.
a scientific law explains a set of events.
b.
a scientific law describes what occurs every time in a situation.
c.
a scientific law is constantly modified.
d.
a scientific law is developed without experimentation.

The answer is c because I look it up in the Internet

Glucose, also called grape sugar, blood sugar or corn sugar, is among the simplest and one of the primary naturally occurring sugars. produced naturally by plants as the primary photosynthesis product, it is heavily used by living beings as a main energy source and is necessary for cellular respiration. chemically, it is a monosaccharide carbohydrate and serves as a building block for complex sugars like starch.

That is true tge cactus as a structural adaptation to its envirinment has it leaves reduced to spines. but this doesnt mean it cant produce food it produces food because of the presence of chlorophyll in its stem