According to the article Spare the Rod, about punishment and aggression, if the findings of a study can be generalized to real-world situations, we say the study has ______

A child who is born at a weight of less than 1000 grams would be referred to as having _______________ birth weight

Fill in the blank(s) with correct word

One way to explain canalization is to say that growth proceeds

A) from the top of the body downward. B) from the core of the body outward. C) in different parts of the body according to different time tables. D) along a relatively predetermined path.