AP BIOLOGY

Detailed explanation-1: -water act as a limiting factor in ecosystems as all plants does not have adaptations to survive in arid climates and desert biomes.

Detailed explanation-2: -In general, potable water is considered to be below 1000 ppm TDS. The World Health Organization has established 250 ppm as a taste-derived acceptable drinking-water limit.

Detailed explanation-3: -Some examples of limiting factors are biotic, like food, mates, and competition with other organisms for resources. Others are abiotic, like space, temperature, altitude, and amount of sunlight available in an environment.

Detailed explanation-4: -In the natural world, limiting factors like the availability of food, water, shelter and space can change animal and plant populations. Other limiting factors, like competition for resources, predation and disease can also impact populations.

Detailed explanation-5: -Water is not generally considered a limiting factor because the amount needed is very small. However, lack of water can cause the plant’s stomata to close, which restricts its intake of carbon dioxide.