Answer:
c. Algae to fish to grizzly bear to fungi
Explanation:
Algae are the producers in Yellowstone trophic levels which can be eaten by fish which is a primary consumer. The grizzly bear which is a secondary consumer or carnivores feed on these fish and when the grizzly bear die, fungi which is a decomposer feeds on the grizzly bear and release nitrogenous substances which can be used by the algae for its growth and development. Only 10% of energy is transferred from on trophic level to another whereas the remaining 90% are released in the form of heat energy.
Answer:
The percentage of space not occupied by solid matter in soil is called :
B. Porosity.
Explanation:
- Porosity is represented as the percentage of void in the soil.
- In simple words, it is the number of pores present in a soil.
- The porosity of soil is a factor that determines the quality and suitability of the soil for agriculture.
- A more porous soil does not hold lot of water and nutrient while a less porous soil retains water and nutrient.
- Thus neither a extremely porous nor a less porous soil is suitable for agriculture.
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