Which of the four strands match the strand in the diagram by base pairing?

a. GGTGACT

Explanation:

An easy way to remember base pairing is to think of it as (A)pples to (T)rees, (C)ars to (G)arages. So, A pairs with T, and C pairs with G.

Hope this helps! :)

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.