What makes the placenta unique in origin?
a. It is the first fetal structure to develop.
b. It allows oxygen and nutrients between mother and embryo to mix.
c. It develops from material from both the mother and embryo.
d. It provides the fluid that surrounds the embryo and protects it.
c
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Cognitive-factors explanations appeal to changes in
a. autonomic responses. b. environmental conditions. c. overt behaviors. d. beliefs and expectations.
According to the U.S. Department of Health and Human Services (2004), some ____________________ American children are neglected or abused each year by their parents or caregivers
Fill in the blank(s) with correct word
A restaurant manager wants to investigate the effect of using wine in sauces on the amount of money the restaurant makes per day. What type of variable is the presence or absence of wine in the sauces?
a) control b) dependent c) extraneous d) independent
Hunger and thirst are examples of ________
a. incentives b. instincts c. motives d. drives