Which of the following is an example of commensalism?

a. feather lice cling to the hairs of flies and use them for transportation. the flies are not harmed.

b. honeybees gather nectar from flowers. the bees get food and the flowers are pollinated. both organisms benefit.

c. ticks feed off the blood of animals. the ticks get food, but the animals can get sick. only the tick benefits.

d. a virus attacks an organism and feeds off its tissue. the organism gets sick and dies, also killing the virus.

this null effect is caused by a weak manipulation and ineffective internal validity. in a scientific study, as the one dr. morimoto is trying to perfom, internal validity refers to the confidence placed in the cause-effect relationship and to how well an experiment is done and able to eliminate confounding variables.        

those sounds of the natural world are bioacoustics, and they're more than a false-color spectrogram of data from the musiamunat conservation area.

your answer is a hope that .

answer; the above statement is ( false );