During a dry season, a farmer can cause an environmental change by regularly watering crops. This environmental change can effect the stability of the field's ecosystem by causing the ecosystem to become%0D%0A%0D%0A a%0D%0Aless stable, as the crops in the field outnumber the native grasses in the field.%0D%0A b%0D%0Aless stable, as the crops in the field receive more water than they would with rain.%0D%0A c%0D%0Amore stable, as the crops in the field do not dehydrate and die off.%0D%0A d%0D%0Amore stable, as the crops in the field receive too much water.

b) less stable, as the crops in the field receive more water than they would with rain.

By regularly watering the crops, the farmer is artificially increasing the water supply in the field, which can lead to imbalances in the ecosystem. This can result in issues such as nutrient depletion, soil erosion, and increased vulnerability to pests and diseases. Overall, this change can make the ecosystem less stable compared to its natural state.