Answer:
b. flat rotation curves in spiral galaxies
Explanation:
Dark matter accounts for majority of the matter in the universe (about 85%). It is considered to be composed of subatomic particles which are yet to be discovered. Dark matter cannot be observed because it does not emit light that can be detected. Only its gravitational effect is visible.
Astronomers when calculated the mass of the visible matter and tried to account for the observed speed of stars in the galaxy, there was a mismatch. To understand what caused this mismatch, astronomers gave name to the invisible matter as the Dark Matter.
The expected velocity of stars should decrease away from the near the center of the galaxy but a constant velocity of stars was observed that is a relatively flat rotation curve was obtained.
Thus, flat rotation curves in spiral galaxies in an evidence of Dark Matter.
Answer:
we will no longer have that kind of water to rely on and will have to find another water source. which not having that water can lead to dehydration and famine in that part of the world and lose of finances and water expenses would most likely go up do to the amount of gas spent and delivery and shipping fees
Explanation:
dont rely on my answer im not very smart
Answer: The distant and the Earth
Explanation:
Because the Mar is too far away that its gravity is unable to reach you and also the gravity of Earth is too strong
The region is kuwait Mex.
Answer:
Push factors of migration include all of the following, except __________.
Explanation:
