What is the difference in between water cycle in the desert and water cycle in the rainforest?

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

What is a group of organisms that are closely related and share similar characteristics

I’m stuck on this question cuz i’m stupid sksksksk