Plant species a has a diploid number of 12. Plant species b has a diploid number of 16. A new species, c, arises as an allopolyploid from the hybridization of a and b.

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.

looks like the answer is     c     to me!

yes, because even though a theory has a  lot of evidence to support it, it is not always true

answer(1) tab per dose.;