Curitiba, Brazil, has shown us that ________
A) traffic flows smoothly once pedestrians and bicycles are eliminated
B) once roads are widened, traffic congestion decreases
C) unregulated urban sprawl produces severe air pollution
D) an expanded bus system, affordable to all, can solve a large city's traffic congestion
E) prohibition of all motorized vehicles within cities reduces pollution and saves energy
D
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Which modern day animal has ancestors represented in the Ediacaran fauna?
a. frogs b. jellyfish c. trilobites d. snakes e. corals
Provide a definition for chemical bonding. Compare and contrast ionic and covalent bonding
Provide specific examples of the different kinds of bonds. What will be an ideal response?
________ are the main water-insoluble components of cell membranes
A) Nucleic acids B) Proteins C) Acids D) Phospholipids E) Carbohydrates
Why is chemical weathering more effective in humid climates than arid climates?
What will be an ideal response?