How were absolute ages added to the geologic time scale in the 20th century? What will be an ideal response?
Thousands of absolute ages were added to the relative time scale that had been created. Since
sedimentary rocks cannot be radiometrically dated, interbedded volcanic rocks and igneous intrusions
that could be dated provided boundaries of the subdivisions of the geologic time scale.
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For upwelling to form, the wind must blow parallel to the coastline
Indicate whether the statement is true or false
In the 1900s the world population increased from _____ billion to _____ billion.
Fill in the blank(s) with the appropriate word(s).
What is the IUPAC name of propyl isobutyl ketone?
A) 4-octanone B) 2-methyl-4-heptanone C) 3-methyl-4-heptanone D) 2,2-dimethyl-3-hexanone
High tides are known as ________ whereas low tides are kown as ________
A) ebb tides; flood tides B) tidal bore; tidal bulge C) spring tides; neap tides D) neap tides; spring tides E) flood tides; ebb tides