What can Antarctic ice core samples tell us about atmospheric CO2 levels? Select all that apply
A. Nothingâ€"ice is made of H2O and not
CO2.
B. CO2 ice core data confirms CO2
measurements taken directly from the
atmosphere.
C. Ice cores can help scientists estimate
atmospheric CO2 levels from centuries ago.
D. Ice cores can tell scientists exactly what
plants lived on Earth centuries ago.
B,C
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What is the definition of endocytosis?
A. The transport of large molecules out of the cell. B. The entire plasma membrane turns itself inside out. C. The digestion of larger molecules that were brought into the cell. D. The transport of large molecules into the cell.
The exchange surfaces of fish gills are arranged as rows of
A. lamellae. B. trachea. C. alveoli. D. parabronchi. E. spiracles.
What other information is related to the question? Which information is most useful?
What will be an ideal response?
Land vertebrates evolved which of the
following to help maintain water balance? a. circulatory system b. thyroid c. kidneys d. liver e. none of these