The large increase in atmospheric carbon dioxide in the last 50 years most likely comes from C. an increase in the burning of fossil fuels.
Fossil fuels contribute greatly to to the increase in atmospheric carbon dioxide. They include coal, natural gas, and more, and when they are burned, one of the combustion products is carbon dioxide.
At dawn the squid prepares to hide in the sand for the day and it ejects about 95% of the bacteria from the light organ in order to reduce or stop the growth of bacteria population in the squid. This will prevent the bacteria population from reaching a level too high for the squid to support.
