Answer:
The answer is codominace. :)
Explanation:
I would say D narrow temperature. Most other planets are too hot or cold to sustain life.
C. Energy processing from corn biofuels is not energy efficient.
Mostly bacillus (bacteria with cylindrical/rod shaped morphology) I'm pretty sure, you don't see any type of coccus (bacteria with spherical morphology) with flagella.
I think the answer is sperm or eggs? i'd need context