What is a functional group?
A. a group of hydrocarbons that can be used to make new materials
B. a set of atoms bonded together that give molecules containing them similar properties
C. a set of molecules that are grouped together to form a functional material
D. a group that adds function
E. none of the above
Answer: B
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Hydropower
A. provides about 90% of the electricity in Europe. B. is most important in rivers and streams. C. uses the potential energy of large standing water bodies to produce electricity. D. can emit methane from the decomposition of submerged vegetation in reservoirs. E. is expected to grow in large-scale plants in the future.
The aquatic ecosystems that show the highest net primary productivity are ____________________
Fill in the blanks with correct word
Source separation differs from materials-recovery facilities in all but which of the following?
a. It has lower start-up costs. b. It yields cleaner and more valuable recyclables. c. It produces less air and water pollution. d. It provides fewer jobs per unit of material recycled. e. It saves more energy per unit of material recycled.
Make a brief list of five potential onboard lecture topics that might be of interest to passengers on the Crystal Serenity
What will be an ideal response?