Hey there!!
For box X, the allele would have to be bc to match the data you have here.
I really hope this helps!!
That would be living things.
Because...
Biosphere= living things
Lithosphere= land
Hydrosphere= water
Atmosphere= air
Should be A the newer layers are usually on top
Mitochondria and chloroplasts both have prokaryotic ribosomes.
Answer:
Yes, it is an adaptation.
Explanation:
The squirrels with the darker coat color may have adapted to fit in with the surroundings, like if your neighborhood had darker colored tree bark. There is also the possibility that they adapted to avoid predators, such as stray cats and dogs (which would mean that they adapted to become less visible to their attacker).