Answer:
I would say the big bang theory isnt a theory because the big bang theory started the earth
Heated air inside a ballon causes it to rise up in the sky because of helium,helium is the second Antony number that has the lowest mass maybe when the air cools the balloon it causes osmosis to make it change its mass.
A recessive trait inheritance could be more prevalent in a population than the dominant because mutation could occur because the mating does not have a wide variation causing a lethal gene or an autosomal sex link to be easily passed on the offspring
Answer:
The answer is: 3. populations, communities, and ecosystems.