Which chemicals make plastics more flexible and are found in a variety of products, such as detergents, cosmetics, body lotions, soft vinyl toys, and shower curtains?
A. carcinogens
B. phthalates
C. estrogens
D. androgens
E. BPAs
Answer: B
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Each number on this figure refers to a location depicting groundwater in a subsurface material that is consistent in character across the entire figure. Of these locations, which one has the water table most clearly above the surface?
A) 1
B) 2
C) 3
D) 4
E) 5
Small turbines have been placed in the Gulf Stream to harness this major ocean current. Indicate whether the statement is true or false
Residence time is ________
A) the chemical change that occurs with time, when substances alter the growth and development of humans B) average length of time a molecule of a substance spends in the environment C) the length of time it takes for chemicals to be stored in the tissues of living organisms D) the chemical change that occurs with time, when substances are altered by the sun or metabolized by microorganisms E) the length of time it takes to produce toxic chemicals in the environment
A geostationary satellite takes pictures of
a. ?the moon as it is seen from Earth. b. ?other planets as they are seen from Earth. c. ?different areas on Earth when it is stationary. d. ?one area on Earth as it moves at the same rate as Earth’s spin. e. ?any recurring geologic event on Earth.