Which environmental problem has caused many lakes to be too acidic to support most species of fish?
A. acid rain
B. acid reflux
C. ozone pollution
D. uranium tailings
Answer: A
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A cool period in continental Europe and North America between 1,560 and 1,880 is known as the _______________. (three words)
Fill in the blank(s) with correct word
The most likely way volcanic activity could have contributed to the Permian mass extinction is by ____
a. destroying habitat b. raising local temperatures c. inhibiting rain fall d. killing primary consumers e. damaging the ozone layer
Which of the following statements is FALSE about volcanoes?
A) volcanoes usually provide an array of warnings before they erupt, thus minimizing the loss of life should humans heed the warnings B) volcanoes tend to generate very poor soils for agriculture C) volcanoes are found in site-specific places on Earth, most notably along plate boundaries D) volcanoes are an excellent source of geothermal energy E) volcanism may provide tourism revenue due to the scenic beauty of the landscape
Organisms that are not attached to the bottom of the ocean are called ________ organisms.
Fill in the blank(s) with the appropriate word(s).