The correct answer is their blood lacks A or B antibodies.
People with type AB blood have A and B antigenes on the surface of red blood cells (RBCs). Antigen AB has no antibodies, thus, transfusion can be considered safe ( the serum of the recipient does not contain antibodies for the blood cell antigens of the donor).
B
The other problems are not as easily solved; whereas, data collection over long periods of time is possible and was already done in the past, eg temperature and weather patterns. Therefore, this is the easiest limitation to overcome.
Answer:
No, I don't reckon that water is alive. I don't think that it is "dead" either. It simply just... exists. However, it DOES hold life within it. But the water itself is not alive, because for something to be considered "alive", it must meet the requirements of responding to stimuli, reproducing and growing, and must be dependent on its environment. Water itself cannot be dependent on an environment, because it IS an environment.
This is just my opinion though :)
<span>I am a Carbon atom and I took birth in the air. I had spend a memorable time in a molecule and there were two very nice oxygen atoms too. I just got into the air and I am very excited that I had my complete incoming box of electrons. I am a carbon atom and I have six electrons. Right now I am in a carbon dioxide molecule and I am just wondering in air. While i was enjoying my journey I waved to my friends like oxygen gas which is a molecule of two oxygen atoms.Oxygen atom is my best friend. I’ve heard stories of becoming solids and many different things when i was too young, but now I just like the air and I am loving it.</span>
