Question

one hot summer, a grassland experienced a drought. which most likely happened in the ecosystem during this time?
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.

Explanation:

1. Drought reduces grass (primary producer) biomass, the main food for primary consumers like herbivores. With less food available, competition among these consumers rises.
2. Drought slows nutrient cycling, as dry conditions reduce decomposition and microbial activity, so nutrient cycling does not speed up.
3. Drought does not block solar radiation; in fact, hot, dry conditions often have more unobstructed sunlight.
4. Secondary consumers would face food shortages but would not become completely extinct in a short-term drought, as extinction is a long-term process.

Answer:

The competition for food among primary consumers increased.