Answer:
D) only II, III, and IV
Explanation:
Green plants perform the process of photosynthesis. During photosynthesis, splitting of water molecules in the presence of sunlight produces molecular oxygen as a by-product. Plants release oxygen in the air which in turn is used by all the living beings for breathing.
Plants are one of the biotic factors that are involved in the formation of soil. Plants add litter to the ground which in turn is decomposed by the microbes. This adds humus and enriches the soil with organic nutrients. O and A horizons of soil have a higher amount of organic matter.
Wetland is the region where the transition between land and aquatic ecosystems occur. During excess rainfall, extra water is stored in wetlands. This prevents flooding. This water is sent back to the water bodies later.
The processes which would increase the quality of the abiotic environment are: D) only II, III, and IV.
An ecosystem can be defined as a biological community (space) comprising all living organisms (biotic factors) and the physical environment or non-living things (abiotic factors) with which they interact.
Some of the essential services that are provided by an ecosystem for the sustenance of life include;
Hence, the essential services that are provided by an ecosystem include processes that increase the quality of the physical environment or non-living things (abiotic environment) such as:
I. Green plants (autotrophs) produce the oxygen that living organisms breathe in during respiration.
II. Soil formation is enhanced by the presence of land.
III. The presence of diverse wetlands helps in controlling erosion and flood.
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