Scientists study ancient climates by looking at ice cores, tree rings, and pollen samples?

How did the research presented in the article affect scientists' understanding of the evolution of eukaryotes

Consider the classification levels of a human. eukarya ,animalia ,chordata ,mammalia ,primates, hominidae ,homo ,sapiens .which is the most specific taxonomic level in the classification system above? a sapiens b homo c hominidae d primates

Casts and mold are a type of preservation where the original material decays, leaving a mold in surrounding rock that can be filled with another sediment a. true b. false