Yup!! After a long duration...... Mutations lead to evolution because if the mutation is favorable then it will survive and pass on its traits.
Producers, which are the base of the food chain for ecosystems are essential and do not require oxygen to cycle energy and matter, as they create oxygen through photosynthesis. Plants are producers that use this process to capture light energy and use it to convert carbon dioxide and water into an organic substance known as glucose.
I do believe it is C hope this helps its been a while since i was leaning about this.....
You use your lungs to take deep breaths and it calms all your nerves
HOPE THIS HELPS
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