Environments are made up of living (biotic) and nonliving (abiotic) factors, True
False
(Answers to 4 and 5)

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.

Read each description below and determine to which stage of sleep each pertains. then click and drag each box into the appropriate category below.

Which animal is a producer in this ecosystem