Se dice que la inmunización deja “memoria inmunológica” frente a un nuevo ataque del germen patógeno. ¿Cuál es significado de esta afirmación en relación a las vacunas?

The rapid decomposition of organic matter produces evidence which supports: the slow accumulation of coal deposits long ages of the earth rapid burial of vast amounts of vegetation biblical account of noah's flood

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks

The many stone tools, fragmentary animal bones, and teeth found at gran dolina, spain, indicate that hominids there? a. processed and consumed animals and other hominids. b. did not differ appreciably from earlier asian homo erectus. c. were similar to later homo sapiens. d. none of the above