Which of the following has placed stress on the endangered Ganges River dolphin and the now extinct Chinese Baiji?
A) Local people killing them for food
B) Pollution and competition for fish from fishermen
C) Invasive marine dolphins
D) Poaching for the pet trade
B
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The micas, biotite and muscovite, both exhibit one direction of cleavage.
Indicate whether the statement is true or false.
Solar collecting panels would be most effective if they were positioned
A) nearest to the equator. B) at mid-latitudes on Earth, about the level of Ohio. C) at higher-latitudes on Earth, about the level of Montreal, Canada. D) near the poles of the Earth.
____________________ are not warm fronts or cold fronts, but represent a narrow boundary where there is a steep horizontal change in moisture
Fill in the blank with correct word.
The Hudson River has been polluted with ________ from a facility that manufactures electrical transformers
A) DDT B) peat C) PCBs D) coolants E) solid waste