The apparent (or relative) brightness of two objects will remain the same as long as both objects are illuminated by the same amount of light

Children who enjoy participating in sports also enjoy physical education at school

Indicate whether this statement is true or false.

Compared to other psychoactive substances, why is it more difficult to clearly define the effects of using bath salts?

A. The ingredients in various products differ. B. The drugs affect numerous neurotransmitters. C. The product's legal availability limits research. D. The effects are primarily due to user expectations.