The middle question is the nucleus, transcription takes place in the nucleus while translation happens in the cytoplasm
These are the possible genotype, B or O and the phenotype I can not find since I don’t know any of their characteristics
A all cells have the same number of chromosomes hope this helps!! and C
An example of an ecosystem that benefits people could be the ocean.
The ocean regulates the temperature of the earth, allowing a more comfortable place for people to live.
Hope this helps!