In the past, Swahili served as the lingua franca throughout East Africa
Indicate whether the statement is true or false.
Answer: TRUE
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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?
Describe the three basic steps in using a topology rule in ArcGIS.
What will be an ideal response?
Why is biosynthesis unlikely to occur today as it did in Earth's youth?
A) Living organisms have altered oceanic and atmospheric conditions B) There is less available oxygen in the atmosphere C) Ozone is less protective from the sun's influence D) All of these choices are true
A major contributing factor to the lack of precipitation for the Namib and Atacama deserts are
A. cold ocean currents. B. distance to the sun. C. rain shadow. D. distance to ocean.