Explain why El Niño causes higher temperatures and heavy rainfall in the southern United States, while it leads to winters that are warmer than usual in the eastern part of the United States. (Answer in complete sentences.)

How does the molecular clock work? a. it analyzes the brain functionality of two different species. b. it examines and compares the physical characteristics of two different species. c. it illustrates relationships between two different species. d. it compares the number of mutations that exist in the dna of two different species.

What are the two main phases of a cell cycle

All eukaryotic cells contain small bodies called