Complete the following statements about chemical cycling and energy flow within an
ecosystem. Choose the best answer.
1. The sun is the ultimate source of energy for nearly all of life. Plants and certain other
organisms convert solar energy into electrical
energy through the process of
photosynthesis
2. Plants that provide energy in the form of nutrient molecules are known as
consumers
3. Sunlight striking plants and the heat released by producers, consumers, and
within an ecosystem.
decomposers are all components of energy flow
4. Organic nutrients that move from one population to another in a food chain is an
example of primary productivity within an ecosystem.
5. Energy flow and chemical cycling in an ecosystem determine where different
ecosystems are found in the biosphere