What are the determinant factors of plant water availability? Precipitation Evaporation Soil water holding capacity Competition All the above

### All the above

## Step1: Identify the factors affecting plant water availability### Plants require water for their survival and growth. The availability of water for plants is determined by several factors. These include precipitation, evaporation, soil water holding capacity, and competition.## Step2: Understand the role of precipitation### Precipitation refers to any form of water - liquid or solid - falling from the atmosphere. It is a primary source of water for plants. The amount and intensity of precipitation can greatly influence the amount of water available to plants.## Step3: Understand the role of evaporation### Evaporation is the process by which water changes from a liquid to a gas or vapor. This process can lead to a reduction in the amount of water available to plants, especially in dry or hot conditions.## Step4: Understand the role of soil water holding capacity### The soil water holding capacity refers to the amount of water that soil can retain for plant use. Different soils have different water holding capacities. For example, sandy soils generally have lower water holding capacities than clay soils.## Step5: Understand the role of competition### Competition refers to the struggle between different plants (including different plant species) for the same water resources. The amount of water available to a plant can be reduced due to competition from other plants.