the answer for this question is the distance of the star from sun using parallax method
The alula is a small structure that is found on birds. It is located at the joint between the hand wing and the arm wings of birds and it is the freely moving, first digit of a bird's wing. It is normally used by birds in slow flight. In humans, the structure that is comparable to the alula is the thumb.
Answer:
Permeability of plasma membrane is the rate of passive diffusion molecules across the biomembrane.
