The competition for food among primary consumers increased. Nutrients cycled through the system at a faster rate. Less solar radiation was able to enter the system. Secondary consumers became extinct.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: One hot summer, a grassland experienced a drought. Which most likely happened in the ecosystem during this time?
Possibilities:
- The competition for food among primary consumers increased.
- Nutrients cycled through the system at a faster rate.
- Less solar radiation was able to enter the system.
- Secondary consumers became extinct.

The competition for food among primary consumers increased.