Answer:
The correct statement related to abiotic factors in ecosystems is:
A. Forest fires in certain biomes reduce nutrient content of soils.
Forest fires can have a significant impact on the nutrient content of soils in certain biomes. When a forest fire occurs, the intense heat can cause the organic matter in the soil to burn, leading to a loss of nutrients. The fire can also result in the release of nutrients into the atmosphere as gases and ash. This process can temporarily reduce the nutrient availability in the soil, affecting the growth and development of plants in the ecosystem.
Option B, stating that low precipitation results in an increase in plant growth, is incorrect. Generally, plants require an adequate water supply for growth, and low precipitation can limit their growth and survival.
Option C, suggesting that low temperatures reduce the rate of evaporation for plants, is also incorrect. Low temperatures typically lead to reduced evaporation rates as less heat energy is available to drive the process.
Option D, claiming that climate change has improved coral reef health, is also incorrect. Climate change, with factors such as rising sea temperatures, ocean acidification, and increased frequency of severe weather events, has had detrimental effects on coral reefs. These impacts include coral bleaching, reduced coral growth, and increased vulnerability to disease and predation.
Therefore, the correct statement is A. Forest fires in certain biomes reduce nutrient content of soils.