Which statement about epiphyses is true?
A. They appear only between age 2 and age 6.
B. They begin to appear only after age 6.
C. They convert bone into cartilage in order to support the developing skeleton.
D. They are growth centers in which cartilage hardens into bone.
Answer: D
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A researcher introduces a new mathematics program in one school district and uses a neighboring district as a no-treatment control group. After the program is in place for six months, the researcher intends to give the students in both districts a standardized mathematics test and then compare their scores. This research cannot be classified as a true experiment because ____. a. the treatment
is administered to only one group. b. there is no pretest to determine mathematics ability before the program c. the researcher does not control the assignment of participants to groups d. it is not conducted in a laboratory
What is the first sleep stage that most people enter each night when sleeping?
What will be an ideal response?
What did Piaget call the error that infants made when an object was hidden under blanket B but the infants stopped looking for the object after they looked under blanket A?
a. the A-and-B error b. the A-or-B error c. the A-not-B error d. the A, B, Cs of infant memory
Which of the following is an example of a secondary sexual characteristic?
A) development of the uterus B) breast development in females C) development of the vagina D) development of the testes