The answer is c. Adaptation
Adaptation is a physical characteristic that helps an organism survive in an environment. This help them survive in a natural selections.
The examples are :
- cactus that evolved to change its body structure to retain as much water as possible
- Bat that have adapted their hearing to hunt at night
Green plants need water (H2O) and carbon dioxide (CO2) for the process of photosynthesis.
Although CO2 has carbon, it's inorganic (there are some chemistry rules for what compounds are organic/inorganic, but I won't talk about them here).
