Which of the following best describes the theory of gradualism? Biological change occurs quickly over a short period of time and is followed by
long periods of little or no change.
Tiny changes in a species add up to major changes over time.
Events throughout the history of life have caused the extinction of species.
Biological change occurs slowly and steadily over a long period of time.

the answer is: trichonympha lives in the gut of termites and digests cellulose eaten by the termite.

this is an example of a symbiotic association of a protozoan with its mode of association.

hope i

-lavira: )

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.