What is the iron hypothesis and why has it not been supported?
What will be an ideal response?
John Martin put forth the iron hypothesis, stating "Give me a half tanker of iron and I'll give you another ice age". His studies indicated a scarcity of iron micronutrients in the open ocean (i.e. pelagic zone) that was limiting phytoplankton growth and overall productivity in these "desolate" regions. Martin hypothesized that increasing phytoplankton photosynthesis could reduce the amount of greenhouse gas in the atmosphere - slowing or even reversing global warming - by sequestering large amounts of CO2 in the sea. It turns out, however, that C sequestration has not increased with increased photosynthesis due to iron fertilization. It is not clear why this happens, but it may be because so little of the C gets trapped on the ocean floor.
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The increased rate of O2 uptake by activated phagocytes is called the
A) hypoxemia. B) pyogenesis. C) respiratory burst. D) peroxidase.
What term describes the unwinding and changes in the shape of a protein?
a. Denature b. Metabolism c. Condensation d. Hydrolysis e. Breakdown
The temperature range that provides good organismal performance is the same from one species to
another.
Indicate whether the statement is true or false.Evolution is dependent on genetic diversity in the evolving population
Indicate whether the statement is true or false