Answer:
Meters/grams are the most common.
Explanation:
Grams are very exact and meters are also common to use.
Factors that influence the reaction rates of chemical reactions include the concentration of reactants, temperature, the physical state of reactants and their dispersion, the solvent, and the presence of a catalyst.
Source: Google
This illusion is an example of what you called an INDUCED MOVEMENT. It is called an induced movement because animated neon signs seem to move even though there is no physical movement in them. Induced movement or induced motion is an illusion in which people tend look into it moving even it is really not moving.
The pit that marks the location of the umbilical cord after birth is known as the navel or belly button. All animals that grow placenta during fetal development will have a navel or belly button. The scientific name of the structure is the umbillicus. It can be a depression in some individuals or raised in others.
I think it's first quater, hope that helped!