Based on the processes listed and their roles in carbon transfer, we can categorize them as follows:
-
Photosynthesis:
- Transfers carbon from the atmosphere to the biosphere (plants take in carbon dioxide).
-
Cellular Respiration:
- Transfers carbon from the biosphere to the atmosphere (organisms release carbon dioxide during respiration).
-
Combustion:
- Transfers carbon from lithosphere to atmosphere (combustion of fossil fuels releases stored carbon dioxide).
-
Decomposition:
- Transfers carbon from the biosphere to the atmosphere (decomposers break down organic matter, releasing carbon dioxide).
Fit these descriptions into the food web of carbon transfer:
- Photosynthesis: Transfers carbon from the atmosphere to the biosphere.
- Cellular Respiration: Transfers carbon from the biosphere to the atmosphere.
- Combustion: Transfers carbon from the lithosphere to the atmosphere.
- Decomposition: Transfers carbon from the biosphere to the atmosphere.
So, the correct matches to your stem are:
- Photosynthesis: Transfers carbon from the atmosphere to the biosphere.
- Cellular Respiration: Transfers carbon from the biosphere to the atmosphere.
- Combustion: Transfers carbon from the lithosphere to the atmosphere.
- Decomposition: Transfers carbon from the biosphere to the atmosphere.