HELP PLS DUE IN 30MIN WILL MARK BRAINLIEST Discuss John Dalton and explain why he was so important. What was his contribution to atomic theory? Why was his contribution so important to the concept of atomic theory? (3 Paragraphs)

Which of the following statements is true? 1. the mantle of the earth is made of solid nickel and iron. 2. the crust of the earth is made of solid nickel and iron. 3. the inner core is made of solid nickel and iron.

How can a geological time scale best be reconstructed? a) comparing vestigial structures in living species b) comparing homologous structures in living species c) examining homologous structures in fossil remains d) examining the written records of scientists from past cultures

Which particle controls what element an atom is?