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1.
Members of the same species living in the same place at the same time make up the
trophic level.
ecosystem.
community.
population.
2.
The energy needed for natural cycles to operate is obtained from
fossils
the sun
the air
decomposers
3.
Members of the same species living at the same place at the same time make a/an
population
ecosystem
community
trophic level
4.
In the nitrogen cycle, the bacteria that converts nitrates to atmospheric nitrogen is
Nitrifying bacteria.
Denitrifying bacteria.
Nitrogen fixing bacteria.
Putrefying bacteria.
5.
Which of the organisms occupy the first trophic level? (Grass → Grasshopper → Toad → Snake)
Grasshopper
Grass
Toad
Snake