PLEASE HELPP! I WILL GIVE THE BRAINLIEST The best soil for agriculture in Mesoamerica was found in the southern highland valleys. The soil had been enriched through eruptions, while the mild climate made the area an ideal place for people to settle.
Word Bank:
volcanic volcano water

Using mr smith and his id, identify two potential internal validity threats that might affect the a—b design. tell me how that threat might impact conclusions in the a—b design. note #1: you cannot use maturation (since i already did that one for note #2: there are some mr smith id threats that won’t have much impact in a single case design.