Your dog has been scratching itself for the past few days. You notice that this scratching is occurring more than usual. When you take him to the veterinarian, the doctor explains that your dog has been infested with fleas. The fleas have been making your dog scratch like crazy, while making a nice little home for themselves within your dog's fur. In this scenario, what type of relationship does the dog and the fleas have?

a. mutualism
b. commensalism
c. parasitism

The charge on a charged sphere is: a)concentrated at its centerb)distributed uniformly throughout its volumec)clustered on its centerd)distributed uniformly over its surface

Aboat radioed a distress call to a coast guard station. at the time of the call, a vector a from the station to the boat had a magnitude of 45.0 km and was directed 15.0° east of north. a vector from the station to the point where the boat was later found is = 30.0 km, 15.0° north of east. what are the components of the vector from the point where the distress call was made to point where the boat was found? in other words, what are the components of vector c = b - a?

Holes drilled several kilometers into earth’s crust provide direct evidence about earth’s interior in the form of