you learned about different Astromonters who made significant contributions to astronomy and helped us learn about movement in space Although was a philosopher, he also made contributions to astronomy. in space below explain how Aristotle inability to detect parallax led him to propose a geocentric model of the solar system

correct answer is option a.

tropopause, stratopause and mesopause have all in common aspect that is point of maximum temperature in its layer of the atmosphere. all layers of atmosphere observe abrupt change in temperature. tropopause is the boundary between troposphere and stratosphere. stratopause is the boundary between stratosphere and mesosphere. mesopause is the boundary between mesosphere and thermosphere. these all boundaries are ranges between altitude of 0 to 80 km.

i think its control and coordinate because im pretty sure thats what tissue does and the joints are what control movement and then your skeletal/ bones provides portection. hope that .

the tricuspid valve is present between right atrium and right ventricle