Question

1. what is the primary source of energy for ecosystems?

a. sunlight
b. fossil fuels
c. wind energy
d. geothermal energy

1. how much energy is typically transferred from one trophic level to the next?

a. 50%
b. 25%
c. 90%
d. 10%

1. a herd of elephants staying together in a given habitat demonstrates which type of dispersion pattern?

a. random
b. linear
c. clumped/clustered
d. uniform

Explanation:

• For question 22: Sunlight is the primary energy source for ecosystems as it is used by plants in photosynthesis to produce energy - rich organic compounds.
• For question 23: Only about 10% of the energy is typically transferred from one trophic level to the next due to energy losses in metabolic processes.
• For question 24: When a herd of elephants stays together in a habitat, it shows a clumped or clustered dispersion pattern as they group together for social and survival reasons.

Answer:

1. A. Sunlight
2. D. 10%
3. C. Clumped/clustered