Answer:
A. Both are anaerobic processes
Answer is b. Burning fossil fuels causes a decrease in the pH of ocean water making it more acidic.
Burning of fossil fuels release carbon dioxide and other harmful gases in the atmosphere. Carbon dioxide gets dissolves in the ocean to form carbonic acid. Due to formation carbonic acid, the pH of ocean water changes slightly. The average pH of ocean water was 8.2 slightly basic. Now it 8.1, it means there is 25 % increase in acidity of ocean water.
The one that is different is HORSE.
Lion, wolf and tiger are flesh eaters while horse is a grass eater, thus, horse is an herbivore while the other three animals are carnivorous in their feeding mode. The difference in these animal feeding mode will results in differences in their stomach compartment and their digestive process.
I believe that the answer is biosphere<span />