An index fossil is a fossil from a very short-lived, geographically widespread species known to exist during a specific interval of geologic time.
Answer the following statement true (T) or false (F)
True
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A change in the acidity of mountain lakes would most likely be a result of
(1) ecological succession of the area at the top of the mountain (2) the introduction of new species into the lakes (3) air pollution from smoke stacks miles away (4) planting grasses and shrubs around the lakes
The Industrial Revolution resulted in many changes to farms in the United States, and it
A) increased the number of family farms and increased the size of each farm. B) increased the number of family farms but decreased the size of each farm. C) increased the efficiency of farming resulting in fewer, larger farms. D) introduced new crops that required the development of new farming techniques.
The elastic-rebound theory explains what happens to the Earth's plates during an earthquake
Indicate whether the statement is true or false
Which rock layer is the oldest in this image?
What will be an ideal response?