What does the external respiration mean and the equations: H +HCO3 > H2O +CO2

Hb+O2 >HbO2

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burning of wood and coal

explanation:

the panel also concluded there's a better than 95 percent probability that human-produced greenhouse gases such as carbon dioxide, methane and nitrous oxide have caused much of the observed increase in earth's temperatures over the past 50 years.

the answer is a) cell division.

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answer///multiple alleles;