AP BIOLOGY

Detailed explanation-1: -Water (H2O) is a very important abiotic factor – it is often said that “water is life.” All living organisms need water. In fact, water makes up at least 50% of almost all living things. Some organisms are made up of 95% water! Water is also essential because other substances easily dissolve into it.

Detailed explanation-2: -Answer and Explanation: Water is considered to be abiotic because it is a nonliving component of an ecosystem. An ecosystem is a particular community of organisms and all of its surrounding factors. Abiotic factors are those nonliving parts of an ecosystem such as water, soil, rocks and air.

Detailed explanation-3: -Examples of abiotic factors are water, air, soil, sunlight, and minerals. Biotic factors are living or once-living organisms in the ecosystem.

Detailed explanation-4: -Water temperature, pH, phosphate and nitrogen levels, dissolved oxygen, and substrate composition are some of the abiotic factors to consider and measure. These must be within certain ranges for the system to be habitable for living organisms.