Nitrogen gas returns to the atmosphere by the action of . nitrogen fixing bacteria. denitrifying bacteria. nitrifying bacteria. nitrate fertilizers. . 15. The sequence of energy flow through a food chain is . primary consumers‑ producers‑ higher order consumers . - PowerPoint PPT Presentation
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Nitrogen gas returns to the atmosphere by the action of
nitrogen fixin
g bacte
ria.
denitrify
ing bacteria
.
nitrify
ing bacteria
.
nitrate fe
rtilize
rs.
14%0%4%
82%1. nitrogen fixing bacteria.
2. denitrifying bacteria.
3. nitrifying bacteria. 4. nitrate fertilizers.
15
The sequence of energy flow through a food chain is
primary co
nsum...
higher ord
er c...
4%
85%
7%4%
1. primary consumers producers ‑ ‑higher order consumers.
2. producers higher order ‑consumers primary consumers. ‑
3. higher order consumers primary ‑consumers producers. ‑
4. producers primary consumers ‑ ‑higher order consumers.
15
In a terrestrial ecosystem, the trophic level that would contain the largest biomass would be the
producers.
primary co
nsum...
seco
ndary co
ns...
highest order ..
.
decomposers.
74%
4%11%
4%7%
1. producers.2. primary consumers. 3. secondary
consumers. 4. highest order
consumers. 5. decomposers.
15
The study of how living things interact is called:
Ecosyste
ms
Abiotic facto
r...
Ecology
The Energy Pyr...
18%11%
71%
0%
1. Ecosystems2. Abiotic factors3. Ecology4. The Energy Pyramid
10
The source of energy for almost all life on Earth is:
Fungi
Animals
Water
Sunlig
ht
0%
75%
25%
0%
1. Fungi2. Animals 3. Water4. Sunlight
15
In an energy pyramid, the bottom level represents: