D. It expands and contrasts
Hope this helps!!
Explanation:
nerves that emerge directly from the brain. Cranial nerves relay information between the brain and parts of the body, primarily to and from regions of the head and neck.
Answer:
C. pH and temperature
Explanation:
Enzyme activity can be affected by a variety of factors such as temperature and pH
I think the correct answer would be the first option. The best method to use in order to measure the distance of star would be to calculate the variations in the position of the star due to movement of Earth in its orbit. The doppler shift which is what is being described in the last three options does not calculate the distance rather it calculates the relative velocity. The method used in measuring the distance was introduced by Edwin Hubble where he found that relative velocity of a body in space is directly proportional to the distance of that body from Earth.
