Please read each scenario and classify as predation +-, competition --, mutualism ++, commensalism +0, or parasitism +-
Barnacles create home sites by attaching themselves to whales. The whales are unharmed.
Silverfish live and hunt with army ants. They share the prey.
Ticks feed on deer blood to the deer's detriment.
A flock of birds arrive in a yard with only one bird feeder. Some birds get left out.
Ostriches and gazelles feed next to each other. They both watch for predators and alert each other to damage. Since the visual abilities of the two species are different, they each can identify threats the other animal would not readily see.
A cuckoo and a warbler try for the same nesting space to lay their eggs.
Yucca flowers are pollinated by yucca moths. The moths lay their eggs in the flowers where the larvae hatch and eat some of the developing seeds. Both species benefit.
Lions and cheetahs hunt the same pack of ostriches.
A bear eats a fish it caught in a river.
As rhinos walk through the grass; insects become active and are seen and eaten by egrets. What is the relationship between the rhinos and the egrets?
A flea feeds on a mouse's blood to the mouse's detriment.
A fox hunts a rabbit and eats it.
Mistletoe extracts water and nutrients from the spruce to the spruce tree's detriment.
Small fish called remoras accompany sharks and dine on scraps left over when sharks feed.
Honey guide birds alert and direct badgers to bee hives. The badgers then expose the hives and feed on the honey first. Then the honey guide birds eat.
Shrimp search for and consume small plankton in the water.
A small shrimp takes shelter inside a sponge, which is apparently unaffected by its tenant.
Giraffes and elephants are drinking from the same watering hole.
Lions hunt and eat large herbivorous mammals such as zebras and wildebeest.
Tapeworms get their nutrition by attaching themselves to the insides of intestines of pigs, cows, and humans. They get nutrition by eating the partly digested food depriving the host of their nutrients.