Birds migrating in the winter would be a behavioral adaptation. The rest of the adaptations would be structural or physiological because they are controlled by mutations in the DNA. <span />
The dose should be adjusted to achieve and maintain therapeutic drug levels
Passive transport is the movement of substances across the membrane without the expenditure of cellular energy.
The transcription produces ribonucleic acid molecules
Because they have different functions (so different genes are active in different tissues)
