Answer:
b. Fetal Hb binds oxygen more tightly than adult Hb.
Explanation:
This is because Fetal Hb needs to draw oxygen more efficiently from the blood stream of mother which is a very difficult task. The more affinity binds the oxygen from the blood stream that is already bonded with Hb of mother This is the main reasons it has higher affinity than that of an adult Hb.
Additionally, speaking of myoglobin. A myoglobin always has more affinity to bind oxygen that that of a haemoglobin molecule.
The correct answer is "R<span>oots to leaves".
Hope this helps!
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Biomass is the renewable energy source that uses the sun.
the answer of the missing blank is: it cools then sinks
C. Protons and electrons must be equal as protons have a + charge and electrons are - so they cancel out