Both species benefit

One species benefits, the other is unaffected

One species benefits, the other species is harmed

Barnacles create home sites by attaching themselves to whales. As the barnacle is a filter feeder, it also gets access to more water (and more food) due to the relationship. Whale is unaffected.

Ostriches and gazelles feed next to each other. They both watch for predators. Because the visual abilities of the two species are different, they can each identify threats that the other animal may not see as readily.

Mistletoe extracts water and nutrients from the spruce tree to the detriment (ill effect) to the spruce

Honey guide birds alert and direct badgers to bee hives. The badgers then expose the hives and feed on the honey first. Next the honey guide birds eat.

Tapeworms reside in human intestine and take nutrients from the human

Epiphytes are a class of plants that grow in the crooks of tree branches. They simply use the tree branches as a way to be higher—closer to the sunlight needed for photosynthesis. The trees aren’t affected by this relationship.

E. Coli is a bacteria that lives in the gut of humans. The human provides the ideal habitat for e coli reproduction and the e coli provides the extra vitamin K that we use.

The tick feeds off the blood of the deer.

Remoras attach themselves to a shark’s body. They travel with the shark and feed on the leftover food scraps after the shark has finished its meal, not taking any food from the shark or slowing it down when swimming.

One organism hunts and eats another organism.

What is intraspecific specific competition?

What is interspecific competition?

Which of the following is/are example(s) of predation?

According to the image, what is the producer?

What are "producers" producing?

The word "primary" means "first."

If that's true, what does primary consumer mean?

Hint: look carefully at the food chain!