Affiliate Marketing Secrets

an earthworm lives and reproduces in the soil.though its feeding,secretion, and tunneling activities, the worm adds nutrients and allows air to enter the soil,together these statements describe the earthworms
A.Habitat
B.Nutrition
C,Niche
DEnvironment
I was gone the day we got this paper. please explain it to me so i understand the concept. thanks

1) The feeding relationships among plants and animals and among various animals in a biotic community is called a:
A) biomass.
B) food web.
C) trophic level.
D) niche.
E) symbiosis
2) Which of the following is NOT a consumer?
A) an oak tree
B) a fish
C) a deer
D) a clam
E) an insect

Feeding on dead organisms and organic waste is a large part of which organisms’ niche?
A. Omnivores
B. Producers
C. Herbivores
D. Decomposers
Please help!

I need an example of similar species that feed on the same prey that can coexist in an area together and void competition which is having different niches.

*YOU DONT HAVE TO ANSWER ALL JUST PLEASE HELP!
1. Describe five different relationships that a penguin has with other species.
2.Describe a penguins feeding a role and its feeding(trophic) level
3. .Describe a penguins biome.
4.Describe a penguins ecosystem
5. Describe a penguins ecological niche

I am very interested in creating a coral reef aquarium, but as someone who has not yet really dealt with saltwater aquariums I am curious what the best type of pets to get for it are? I don’t mind fish, but I am more intrigued by arthropods (especially crustaceans) and cephalopods. I am prepared to do adequate research before purchasing the animals for the reef but knowing a good mix is good to start. I don’t mind investing a bit into it but I would like to keep the daily maintenance costs down, specifically in feeding.
I would like to create a fairly self sustaining environment, but want to be careful to avoid predatory animals that will kill off other species housed with them or compete for the same specific niches (algae eaters, etc.)
Any websites or guides that can provide a good reference on creating a nice balance?