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.
During<span> the high </span>Middle Ages<span>, the </span>Roman Catholic Church became<span> organized into an elaborate hierarchy with the pope as the head </span>in<span> western Europe. He establish supreme power. Many innovations took place </span>in<span> the creative arts </span>during<span> the high</span>Middle Ages<span>. Literacy was no longer merely requirement among the clergy.
Hopes this helps you get to the answer :)</span>
An example of unit 10 study guide circles geometry is solve for x in the diagram attached.
<h3>What is Geometry?</h3>
This is known to be an aspect of mathematics that deals with the study of different sizes, shapes, positions angles etc.
To find x. bring like terms together.
6x + 33+ 45 = 180
6x + 78 = 180
6x = 180- 78
6x=102
x = 102/6
Therefore x = 17
Learn more about geometry from
brainly.com/question/24375372
Answer:
All of them actually but the answer you want is probably south america since its around 1000
Explanation:
Answer:
I think it can be A (10%)
there was many problems for food in 2016 buy now I think it is 10%
