I think it's A. Tell me if I'm wrong.
Please leave a thanks.
Answer:
it would be 60
Explanation:
because if haploid cells double the amount of chromosomes then diploid would do the opposite
A, B, and C make no sense
A makes no sense because Methane is lighter than air, and so the Methane would stay higher in the atmosphere, so it would not seep into the ground, it would remain in the air.
B makes no sense because Burning fossil fuels causes air pollution by increasing the amount of carbon dioxide in the air. the only way that carbon dioxide could pollute water is if it is combined on a molecular level, plus carbon dioxide does not inhibit the process of water being evaporated by the sun.
C also makes no sense because Deforestation causes acid rain by increasing carbon dioxide not decreasing carbon dioxide in the atmosphere.
so therefore by elimination your answer is D
You can get sickle cell anemia with any blood type you have. The disease is also hereditary so it would have to be in your genetics before it is in your blood. And you might just have the trait. So this is why you cannot determined it by just knowing your blood type.