31. Which sequence shows increasing ecological levels of organization?
A. organism, population, community, ecosystem
B. ecosystem, population, organism, community
C. community, ecosystem, population, organism
D. population, organism, ecosystem, community

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Hello there, kawissaehsshen!!!

The answer here would be A.  The organism is a singular thing, so it should be first. The population comes next - it is all the same type of organism living in one ecosystem. Next is community - this is all the living organisms in the area. Lastly, there is the ecosystem - the organisms, their habitats, and everything else.

I really hope this helps you!!

the menstrual cycle – higher tier. negative feedback mechanisms affect the production of hormones in the menstrual cycle. oestrogen also stimulates the release of lh (luteinising hormone) from the pituitary gland, which in turn controls the production of progesterone.