I do not really know but i think that the answer is c but wait for other people
Answer:
Autotrophs
Explination: They are called this because they use the energy and simple inorganic compounds to produce organic molecules.
Homeostasis refers to the body's ability to maintain certain things with
the body at the same level, this is demonstrated for example in
warm-blooded animals having a constant temperature.
Nitrogen fixation is the process by which nitrogen gas from the atmosphere is converted into different compounds that can be used by plants and animals. There are three major ways in which this happens: first, by lightning; second, by industrial methods; finally, by bacteria living in the soil.
Conserve hot water.. check on the heating system and the water heater..
