2. Why did different offspring have different traits from one another, even though they all had the same parents?

it takes hundreds of years to become stable.

if you have another question lmk.

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.

i believe the answer is snake.