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Studying for a Biology final and can’t find the answer to this in my text. Also, if possible, compare and contrast the niches for millipedes and centipedes. PLEASE HELP!

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

I have to right this paragraph in biology about how if an endangered species became extinct, then how would it affect the rest of the organisms. I also need to use the words niche, population, and community in the paragraph. My endangered animal is a plant, so wouldn’t everything decline? I still don’t know how I’m going to fit niche in there. Any help will be appreciated considering that this due tomorrow, thanks.

1. Competition for food cannot occur…
A. Between two populations.
B. Among members of the same population.
C. Among populations whose niches overlap.
D. Between animals from two different ecosystems.

Biology worksheet. i have the definition, but now i need 2 examples and 2 nonexamples of each word.
examples would be like, for abiotic factor: air currents, soil and nonexamples: bacteria, plants
~Ecology
~biosphere
~Population
~biological community
~ecosystem
~habitat
~niche
~symbiosis
~commensalism
~mutualism
~parasitism
~autotroph
~heterotroph
~decomposer
~food chain
~tropic level
~food web
~biomass
any help would be greatly appreciated 😀

To me they both seem like the process where a species is divided and evolves within their own niche to become a separate species from their ancestral species.