Why are block lavas, such as an andesite lava, likely to create short, prominent flows rather than long, fluid flows?
What will be an ideal response?
Answer: Block lavas have a higher silica content and are more viscous.
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How many years of data are displayed from the EPICA ice core?
What will be an ideal response?
In addition to their role in depleting stratospheric ozone, ________ are also effective greenhouse gases
A) nitrous oxides B) primary pollutants C) cholorofluorocarbons D) volatile organic compounds
If the bond angle at a carbon atom is 180°, how many groups are distributed around the carbon atom?
A) 1 B) 2 C) 3 D) 4
Which of the following is true about women in rural Africa?
A) supplement income with crafts B) work as subsistence and commercial farmers C) experience desertification effects D) effective poverty reduction E) supplement income with crafts, work as subsistence and commercial farmers, experience desertification effects