Ur correct imo good job
rain gauges would collect rain water for drinking and other purposes
building dams would collect water
and E is pretty obvious
Dura mater...............
Answer:Spectroscopy helps astronomers to determine the composition, temperature, density, and motion of an object.
Infrared spectroscopy helps to identify the atoms and molecules in the object.
The red shift or blue shift (Doppler Effect) in a spectral line tells how fast the object is receding from Earth or coming toward it.
The Doppler shift enables astronomers to discover extrasolar planets.
As a planet orbits its star, the star is alternately moving away from or toward us.
Astronomers can use the Doppler shifts to calculate the speed of the star and the mass of the planet that is tugging on it.
Explanation:
Ghyjgj
gbhf ghbgf g h
fgh gh fgh f
gfhgfh
gh
gh
gfh
gh
gh
gf
h
