In what organelle of the cell does cellular respiration and fermentation take place?

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.

Which type of respiration takes place when there is no oxygen present

What environmental cues and landmarks do the geese use to determine the timing and direction of their migration over the mountains? how do they find their way?