In addition to seriation tasks that can be done visually, and therefore do not require a mental operation, Piaget also found that during concrete operations children developed the ability to seriate mentally; this ability is referred to as ___

One concept is to another concept as a third concept is to a fourth, is the format of

a(n) __________ problem that measures all three elements of intelligence according to Spearman. Fill in the blanks with correct word

Manuel eats a healthy diet full of fruits and vegetables, hoping to benefit from their naturally occurring ___________________, which promote longevity

a. antibiotics b. free radicals c. telomeres d. antioxidants