Which statement best illustrates a biotic or an abiotic factor that is often found in a city park?
decaying leaves are an abiotic factor because they are not living.
rocks are an abiotic factor because they have never been alive.
water in ponds is a biotic factor, because it provides a habitat for living things.
oxygen is a biotic factor, because it is required for life and found in all living things.

The answer is B.

Explanation: Rocks are an abiotic factor because they have never been alive. Abiotic factors are the sun, rocks, water, and sand.

Option (2)

Explanation:

Biotic factors are those that contain life, whereas abiotic factors are those that do not possess any life. Some examples of biotic factors are plants, animals, and micro-organisms. Abiotic factors include wind, water, temperature, and rocks.

Rocks are the aggregates of minerals and they have been present on earth since the time of formation of earth and they have no life. So they are considered to be abiotic factors.

Water and Oxygen are the essential components on earth and they are both abiotic factors. And decaying leaves are not completely decayed so they can be considered to be biotic as there will be some presence of life. A completely decayed leave is considered to be abiotic.

Thus, the correct answer is option (2) i.e the rocks that are abiotic factor.

a fossil fuel is a fuel formed by natural processes, such as anaerobic decomposition of buried dead organisms, containing energy originating in ancient photosynthesis.[1] the age of the organisms and their resulting fossil fuels is typically millions of years, and sometimes exceeds 650 million years.[2] fossil fuels contain high percentages of carbon and include petroleum, coal, and natural gas.[3] other commonly used derivatives include kerosene and propane. fossil fuels range from volatile materials with low carbon to hydrogen ratios like methane, to liquids like petroleum, to nonvolatile materials composed of almost pure carbon, like anthracite coal. methane can be found in hydrocarbon fields either alone, associated with oil, or in the form of methane clathrates.

the theory that fossil fuels formed from the fossilized remains of dead plants by exposure to heat and pressure in the earth's crust over millions of years was first introduced by andreas libavius "in his 1597 alchemia [alchymia]" and later by mikhail lomonosov "as early as 1757 and certainly by 1763".[4] the first use of the term "fossil fuel" was by the german chemist caspar neumann, in english translation in 1759.[5]

in 2017 the world's primary energy sources consisted of petroleum (34%), coal (28%), natural gas (23%), amounting to an 85% share for fossil fuels in primary energy consumption in the world.[6] non-fossil sources in 2006 included nuclear (8.5%), hydroelectric (6.3%), and others (geothermal, solar, tidal, wind, wood, waste) amounting to 0.9%.[7] world energy consumption was growing at about 2.3% per year. in 2015 about 18% of worldwide consumption was from renewable sources.[8]