Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Scientists study bubbles trapped in ancient glacial ice to
determine how concentrations of nitrogen and carbon
dioxide gas have changed over time. However, bubbles
in glacial ice cannot provide information about changes
in phosphorus. Explain why air samples are not useful
for this purpose, and propose an alternative method to
study how the amount of phosphorus in a region has
changed over time.
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- Compare the changes in Earth's past and present atmosphere Earth's early atmosphere Earth's atmosphere today Traces of nitrogen, ammonia, methane Traces of carbon dioxide, water vapour, ammonia, methane 4% water vapour 21% oxygen 95% 78% carbon dioxide nitrogen Average surface temperature above 400°C Average surface temperature 20 °Carrow_forwardPlease help with explanationarrow_forwardWhat is your hypothesis as to which will settle out first (sand, silt or clay)? What do you anticipate will happen to any organic matter in your sample?arrow_forward
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