Which of these subjects is MOST LIKELY to be studied in ecology? A. the method of water transport in a tree
B. a comparison of muscle cells among birds and reptiles
C. the circulatory system of earthworms
D. the interaction between populations of wolves and deer

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.

When listening the levels of orginization in orginisims from the smallest to most complex , which level is just below organs in complexity

Which of the following is the earliest era of earth's geologic time scale? cenozoic mesozoic precambrian paleozoic