How can you tell that the fireworks exploding during a fourth of july display do not all contain the same ingredients?

a different colors of explosions
b different shapes of explosions
c different timing of explosions
d all of the above

Name the types of burns one can get and which structures of the integument are damaged

Ihave no idea how to solve these. plus there's another question that is 2) a 10 kilogram meteorite is collected in space and brought back to earth. it is composed of 1.25 kg of uranium-238 and 8.75 kg of lead-206. how many u-238 half lives have passed? what is the approximate age of the meteorite?

People with one sickle cell allele are not likely to get malaria. what is this an example of?