Chemical composition of the Sun and the movement of galaxies.
Astronomers are scientists who study the universe and the objects within it such as the sun, galaxies, stars, planets, star forming regions, and the evolution of the universe. Chemical composition of the Sun and the movement of galaxies are the types of evidence that astronomers use to estimate the age of the universe and stars. Astronomers detect the movement of galaxies by viewing its light spectrum. Astronomers can measure the expansion rate of the universe accurately by taking the measurements of many galaxies. Also, the chemical composition of the sun gives astronomers some idea about the age of the universe and stars.
Answer:
Parathyroid hormone
Explanation:
Parathyroid hormone is directly involved in the bones, kidneys, and the small intestine. In the bones, PTH stimulates the release of calcium in an indirect process through osteoclasts which ultimately lead to resorption of the bones.
it is c Object B, by 1 grams per cubic centimeter.
Answer:
Human life cycle ts the life span from step by step .
