Answer:
A supermassive black hole is a perfectly ordinary black hole that happens to be really, really big.
Answer:
B
Explanation:
in photosynthesis CO2 is used to produce glucose NOT energy.
in cellular respiration O2 is used to produce energy NOT CO2.
in cellular respiration oxygen is used to produce energy and CO2.
It would not survie as long
Answer:
Photosynthesis is the answer