The answer would be C. Energy is used through the food chain so energy always decreases. Population size would commonly decrease according to the pyramid of food chain but since there's no answer for that, C would be the most suitable
<span>A microclimate is the climate of a small area that is different from the area around it. It may be warmer or colder, wetter or drier, or more or less prone to frosts.Microclimates may be quite small – a protected courtyard next to a building, for example, that is warmer than an exposed field nearby.</span>
Water is in the hydrosphere
Hope this helps
The sunlight is not made by the plant or used by the plant. It is needed so it could get photosynthesis working and is not a part of the materials needed.