Answer:
That black, sooty-looking substance on the skins of onions is indeed a mold, specifically, Aspergillus niger. It is common on onions, both in the field and once dried, bagged and stored. The fungus typically is found on the outside skins of an onion, and it is harmless, for the most part.
Sex is a reproduction system involving both male and female to partake in sexual activity intercourse to create an offspring between the two beings creating a living organism
The law of conservation of energy is where energy is distributed or transported to other objects or things, and energy is never destroyed or created. It would be C because it talks about while driving the thermal energy of the engine is being used and goes into the air. The others dont explain the transfer of energy as well. I hope this helps.
The answer is b.)Cnidarians
