Which of the following is an example of parasitism?
a. fleas living on a dog making the dog ill.
b. algae living on the slopes giving it camouflage
c. two fish protecting each other from predators
d. tree frogs using the trees to hide from predators

Compare the lunar phase of the waning crescent to the waxing gibbous. the waning crescent is increasing in illumination and the waxing gibbous is decreasing in illumination. the waning crescent is decreasing in illumination and the waxing gibbous is increasing in illumination. the waning crescent is more than half illuminated and the waxing gibbous is less than half illuminated. the waning crescent is more than half illuminated and the waxing gibbous is more than half illuminated.