Darwinism designates a distinctive form of evolutionary explanation for the history and diversity of life on earth. Its original formulation is provided in the first edition of On the Origin of Species in 1859.
The enthalpy - or internal energy - of a substance is a function of its temperature and pressure. The change in internal energy with respect to change in temperature at fixed pressure is the Specific Heat at constant pressure - cp.
The fact is that you could not live except for a huge number of both exothermic and endothermic reactions. Thinking and reading this both involve reactions such as ATP hydrolysis and alkene isomerization. Glycolysis, the TCA cycle, electron transport and phosphorylation capture energy through a succession of endothermic and exothermic reactions. Energy is saved for future use by turning it into fat which is ultimately an endothermic process coupled to other exothermic processes. Even emotions must ultimately be chemical process even though they probably involve electrical processes as well. However, the electrical processes are made possible by chemical reactions. As you study any aspect of biology, keep in mind that it all depends on chemical reactions and essentially all chemical reactions are either exothermic or ...