Define teratogens and give two examples.
What will be an ideal response?
Teratogens are environmental agents that can harm the embryo or fetus. Two examples are marijuana and alcohol.
You might also like to view...
While visiting your niece in the hospital, you see several other very young children. You observe one young child who is placid and smiles often, whereas another child seems to be very active and fussy. Such differences in style are often described as
reflections of a. imprinting. b. motivation. c. affiliation. d. temperament.
Ten years ago, only 20% of the U.S. population consisted of people more than 65 years old. A researcher plans to use a sample of n = 200 people to determine whether the population distribution has changed during the past ten years. If a chi-square test is used to evaluate the data, what is the expected frequency for the older-than-65 category?
a. 10 c. 40 b. 20 d. 100
Dr. Teeth is exploring whether infants can detect chord changes in rock music. He predicts that they will be able to detect simple chord changes by the time they're 18 months old. His prediction is a
A) theory. B) hypothesis. C) test. D) correlation.
In the case study which describes Galileo's experiment of dropping two objects of different weights from the Leaning Tower of Pisa, a variety of control problems were found to exist
How could Galileo have controlled for some of these problems, as mentioned in your text? A) He could have dropped one object, and had another person drop the other object at the same time. B) He could have constructed a box, which would allow both objects to drop at the same time. C) He could have controlled for wind resistance, dropping both objects at the same time. D) He could have chosen a better location and dropped both objects from it.