Because most living things are made of or contain carbon. Living organisms need carbon to live, grow and reproduce.
Basically, all living organisms contain carbon and need it to survive and reproduce.
Answer:
Photosynthesis requires light energy, respiration does not.
Respiration occurs in all organisms, photosynthesis only occurs in plants, green algae,
and some bacteria.
Respiration occurs in mitochondria, photosynthesis occurs in chloroplasts,
Respiration consumes glucose and oxygen, whereas photosynthesis produces them.
Answer:
Polyploid cells have more than 2 sets of each chromosome. Hope that helped! :)