Compared to climate changes due to plate tectonics and astronomical causes, the changes due to volcanic eruptions are:
A) longer. B) of equal duration. C) very short. D) much larger.
C
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In the seventeenth century, Archbishop James Ussher of Ireland used the Bible to calculate that the Earth was created in 4004 b.c.e. Imagine you could take Archbishop Ussher to Niagara Falls
Although Niagara Falls is located on the border between the United States and Canada today, it was located several kilometers to the north at the Niagara Escarpment and is eroding southward. Let's assume the rate of erosion is 50 cm/yr. Assuming the distance from the Niagara Escarpment to Niagara Falls is 11 km, use the equation Rate = Distance/Time to calculate how long it would have taken to erode from the Escarpment to the current location of the falls. How would this calculation compare with Archbishop Ussher's assessment of the age of the Earth? What will be an ideal response?
What is the formula weight ammonium carbonate, (NH4)2CO3?
A) 78.1 amu B) 96.1 amu C) 108.4 amu D) 138.2 amu
In biological systems, aldehydes and ketones are reduced by which of the following?
A) NADH2 B) NADH C) NAD+ D) none of these
What is meant by strain partitioning in this context?
What will be an ideal response?