the answer would be the ability to change skin color i think
Answer:
At an occluded front, the cold air mass from the cold front meets the cool air that was ahead of the warm front. The warm air rises as these air masses come together. ... The temperature may warm or cool. After the front passes, the sky is usually clearer and the air is drier.
link: https://www.windows2universe.org/earth/Atmosphere/tstorm/occl_front.html
The answer is C plants do photosynthesis to make their own food however animals do not
Electricity, heat and fuels.