The group of lipids that represents the general structure of most steroids would be provided in option A. Notable ring type of structures that are fused and may or may not display certain functional groups that can provide different functions to this steroid depending on the functional groups present.
Photosynthesis is the process when the plant takes in carbon monoxide and turn it into oxygen and also makes sugar I think but it uses sunlight too.
My guess would have to be hydropower, since water isn't an un natural substance
The answer to your question is A., as the random movement is a movement
Dragonflies are most closely related to damselflies. Damselflies are smaller, slimmer, and most of them fold their wings along their body when they are resting.
