If all humans had the same DNA, and one person got the cold, everyone would die at some point. The more diversity there is the more chance of surviving an outbreak or natural disaster or something. Think of the flu. there are HUNDREDS of strains out there. some are resistant to our medicines and others aren't.
In cellular respiration, the cells take the carbohydrates in and through complex metabolic processes, they break them down and release the energy.
Answer:
Scientists believe that prokaryotes existed earlier than eukaryotes because certain eukaryote cell structures resemble prokaryotes.
Explanation:
Thank me later.
Answer:
A) producing a litter of puppies by mating two dogs of different breeds
Explanation:
