This is science Identify one symbiotic relationship between you and another organism.

Relate what evidence indicates that mitochondria might have had a prokaryotic ancestor.

Summarize the process by which eukaryotic cells might have evolved.

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.

the correct answer is:

a. formation of precipitation