Who were the men credited for developing a model of the DNA molecule?

James Watson

Watson, Crick, and Rosalind Franklin

In the early 1950s, American biologist James Watson and British physicist Francis Crick came up with their famous model of the DNA double helix.

straight or amphibians are homeothermic to thermal

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.