Before the invention of the lightbulb. Americans burned oil in lamps for light. Whale oil was a popular 26.
biofuel for these lamps. Ship crews would hunt whales for their oil. They searched for the largest
whales they could find so that they could obtain as much whale oil as possible. How might decades of
whale hunting possibly affect the natural selection of the species?
The whales lost their legs.
B The whales became slower.
С. The whales became sinaller
D. The whales changed their calls.

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.

the population of unionid mussels in the hudson river decreased after zebra mussels were introduced. zebra mussels, a nonnative species, competed with the unionid mussels for food. the zebra mussels were able to outcompete the unionid mussels, allowing the zebra mussel population to increase dramatically over six years. the unionid mussel population decreased due to a lack of food.

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