What's an example of commensalism in the chaparral?

Mule deer living in the forest behind a house-example of commensalism, mutualism, or community?

• This is a question in a science assignment i have that's stumping me. Are deer living behind a house an example of commensalism, mutualism, or community? How about: Dandelions taking over your lawn A poisonous sea anemone gives protection to a fish, but feeds on the predators that come after it A fungus grows on a rotting log Ants crawl all over a dead worm Weeds choke out young corn plants in your garden Here are the choices: Commensalism Scavengers Community Competition Food chain Mutualism Population Predator-Prey Dominant Species Decomposer Parasitism I'm so confused! Please help! It's due tomorrow! You can just answer the ones you know. Thanks so much!

• Answer:

  Well, a Mule deer living in your backyard is living off your land so it would be community because you are living together in the same area. Dandelions taking over your lawn are parasitism. There are two living things.. Grass and Dandelions and only one living thing is benefiting from the relationship. Fungus grows on a rotten log is a Decomposer because it is a living thing living off of a dead thing. weeds choke out young corn plants in your garden are also an example of parasitism.