Help plz:)))I’ll mark u Brainliest Part 3 Directions : Identify the type of chemical reaction from the UNbalanced equations : (synthesis single replacement , double replacement, decomposition combustion.)

The answer for #3 is c but i don't know why

Which statement is true about this reaction? 14n+1h 15o it is a practical source of energy on earth. it occurs only outside the solar system. its product is heavier than each of its reactants. it shows the critical mass of an element.

Which organism develops breathing organism develops breathing organs from pharyngeal arches? shark, spider, sea star, sea horse