Which of the following relationships is an example of parasitism?
moths that carry pollen from flower to flower
fleas that bite humans or other animals for food
weeds and wheat growing together in the same field
clown fishes living within large groups of sea anemones
hummingbirds that feed off flowers in a field and foxes that hunt in the field

Fleas that bite  humans or other animals for food

Horizontal asymptote at  tells us that the original graph has been translated down.since  ,  are positive.  also we can say that the point  has a smaller  -coordinate than  .this means that the  transformed exponential function is increasing as it goes to the right. as it goes from  to , the value of the exponential function increases. it goes from to something bigger, . therefore, as  . the left hand would be the side that approaches the horizontal asymptote.so the answer is d