Even before the proposal of continental drift, paleontologists recognized that some sort of land connection was needed to account for the identical fossil organisms found on multiple continents
Select the correct hypothesis or hypotheses these paleontologists developed.
A) Sea level falling
B) A chain of island stepping stones
C) Floating debris used as rafts and sea level rising
D) A transoceanic land bridge
E) Island stepping stones, transoceanic land bridge, and floating debris used for rafts
Answer: E
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How much has CO2 varied in the Vostok record? What were the highest and lowest values? What was the range of CO2 values?
Examine Figure 18.2. The Vostok ice core is 3310 m (10,860 ft) long. The full record extends back to 422,000 years before the present. The figure shows CO2 in parts per million (ppm) and temperature anomalies in Celsius degrees. What will be an ideal response?
Considering how small atoms are, what are the chances that at least one of the atoms exhaled in your first breath will be in your last breath?
A. not very likely because atoms are constantly dematerializing B. very probable because of how incredibly small atoms are C. not possible at all because atom don't last that long D. There's not really a way that scientists are able to make such an estimate.
Warmer oceans dissolve more CO2 than the cold water of the Arctic
a. True b. False
Which of the following cities is the premier science and technology center of India?
A) Kabul B) New Delhi C) Bangalore D) Lahore E) Islamabad