Prenatal exposure to lead is associated with:
A. poor muscular control
B. lower IQ scores
C. liver damage
D. stunted growth
Answer: B
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In the eighth month of pregnancy,
A) fetal growth doubles. B) a layer of fat is added to assist with temperature regulation. C) most fetuses assume an upright position. D) neurons are produced at a rapid rate.
A __________ refers to specific behaviors or patterns of social interactions that naturally occur
within an environment. Fill in the blanks with correct word
The visible signs of sexual maturity that do not directly involve the sex organs are called __________
a) primary sex characteristics b) secondary sex characteristics c) maturation d) secular trend
Each human body cell contains:
a. 46 pairs of chromosomes. b. 46 chromosomes. c. 23 chromosomes. d. 20 pairs of chromosomes.