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For a science poster I have to arrange some terms from “biggest” to “smallest” based on how where the terms fit in a biosphere. My teacher assigned this project before we have actually started the unit, so we haven’t learned this yet and I don’t know if I have them in the right order. These are the words in the order I put them in:
Biosphere
Biome
Ecosystem
Community
Population
Habitat
Niche
Organism
Is this how you would have ordered them? I know for sure that the first and last terms are right, but I’m not sure about the rest.

(1) ____ is an overbundance of nutrients that leads to excessive plant growth and reduction of oxygen in an ecosystem?
-denitrification
-eutrophication
-nitrification
-phosphorylation
(2)which of these biomes recives the greatest amount of yearly rainfall?
-boreal forest
-grasslands
-temperate forests
-tropical forests
(3) An organism’s position within a food web is know as its?
-ecosystem
-habitat
-niche
-tropic level
(4) Hydrothermal vent communities lack photosynthetic organisms at the base of the food web?
-true
-false
(5) the rigid, outer layer of earth is referred to as the asthenosphere?
-true
-false
(6) in commensalism, one species benefits and the other neither benefits nor is harmed?
-true
-false

a.populations
b.organisms
c.biomes
d.niches
e.abiotic resources

10.
Which of the following are detritivores?
A) worms
B) vultures
C) fungi
D) All of the above
16.
Biomes characterized by high annual rainfalls are located at high elevations.
A) True
B) False
20.
The most likely reason there are few large trees in the tundra is because
A) they are grazed by bison.
B) permafrost restricts root development.
C) the soil is nutrient-poor.
D) the average temperature is too warm.
34.
The caterpillars of cabbage butterflies are the only insects that can eat plants of the mustard family because they
A) eat these plants only when young and tender.
B) have evolved the ability to break down mustard oils into harmless chemicals.
C) are parasites while in this stage of development.
D) All of the above
35.
If the niches of two organisms overlap,
A) the organisms may have to compete directly.
B) the two organisms will always form a symbiotic relationship.
C) both organisms will disappear from the habitat.
D) one organism usually migrates to a new habitat.