Multiple choice

The carbon cycle is mainly the conversion of carbon dioxide, which is initiated by the fixation of carbon dioxide from the atmosphere through

  1. decomposition by microorganisms

  2. denitrification

  3. photosynthesis

  4. oxidisation

  5. respiration

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is the correct answer. The carbon cycle is mainly the conversion of carbon dioxide which is initiated by the fixation of carbon dioxide from the atmosphere through photosynthesis.