the deflection waves of an ecg correlate to electrical changes, either depolarization or repolarization, of the heart’s chambers. match the electrical events in the heart with the waves, segments, and intervals of a normal ecg tracing.

its 42

i say its d?

•there must be variation for the particular trait within a population.

•the variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).

•individuals with one version of the trait must produce more offspring than those with a different version of the trait.good

explanation:

can you give me more to work here with plzs and you