Materials in sedimentary cycles
a. pass through both a solid and a gaseous phase.
b. are never present as gases in the ecosystem.
c. are present as liquids in the earth but as gases in
the atmosphere.
d. are most abundant in the atmosphere.
e. cycle relatively quickly through ecosystems.
Answer: b
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A) T cells B) B cells C) macrophages D) lymphocytes
Explain how reproductive isolation is central to the biological species concept
What will be an ideal response?
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In individuals with normal blood sugar levels, glucose is reabsorbed into the bloodstream in the kidney by members of the GLUT transporter family, which form an aqueous pore across the membrane through which glucose can move passively. As a result, no glucose is excreted in urine. However, in people with untreated diabetes mellitus, blood sugar levels are high and glucose is often present in the urine. What can explain this occurrence?
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