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Questions and Answers
Which process provides most of the energy for life processes in ecosystems?
Which process provides most of the energy for life processes in ecosystems?
- Anaerobic processes
- Combustion
- Cellular respiration (correct)
- Photosynthesis
What happens to the matter consumed at the lower level of a food web?
What happens to the matter consumed at the lower level of a food web?
- It is converted into different elements
- It is transferred up to higher levels (correct)
- It is released as energy in cellular respiration
- It is conserved at each link in the ecosystem
Why are there generally fewer organisms at higher levels of a food web?
Why are there generally fewer organisms at higher levels of a food web?
- There is less efficiency in transferring matter up the food web (correct)
- There is a lack of energy at higher levels
- There is a lack of matter at higher levels
- There is more competition at higher levels
Which process is responsible for providing most of the energy for life processes in ecosystems?
Which process is responsible for providing most of the energy for life processes in ecosystems?
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What happens to the matter consumed at the lower level of a food web?
What happens to the matter consumed at the lower level of a food web?
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Which organisms form the lowest level of the food web?
Which organisms form the lowest level of the food web?
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Study Notes
Energy and Food Webs
- Photosynthesis provides most of the energy for life processes in ecosystems.
- In a food web, matter consumed at the lower level is transferred to the next level, with some energy lost as heat.
Food Web Structure
- There are generally fewer organisms at higher levels of a food web due to energy loss at each trophic level.
- Producers, such as plants and algae, form the lowest level of the food web.
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