Ineed brainlest if answered (picture)

In the following diagram, four different index fossils are labeled: which of the labeled fossils comes from the oldest organism? a b c d

Democratic vs democratic whats the difference? ?

Select the correct answer from each drop-down menu. this map shows how climate change might affect precipitation patterns in the great plains of the united states by the end of this century. brown shows a decrease in precipitation, and blue shows an increase. the maps differ based on the predicted levels of greenhouse gas emissions. the maps show that northern areas should get . southern areas will likely get . to use these maps to prepare for natural disasters in the great plains, scientists need to ask, ?