I think that it is atmosphere but not 100% sure you might want to double check
They are distinguished by proteins on the erythrocytes.
Answer:
yes, it could be something that's old or something rats cant eat/drink
Explanation:
Speed and precision have been one of the main differences between an older and a more modern genetically modified food. In addition, these genetically modified organisms have yielded crop efficiencies although it also involves in various debates because of its unethical nature.
The answer is B between respiration and combustion