I'm assuming you meant subsistence farming? If so then yes, it would be a large problem because they would then not have enough food to feed themselves.
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.
B) Faulting
Layers of strata in the earths crust naturally slide along each other. Sometimes friction or blockage causes this process to stop, until enough pressure builds up to overcome whatever the resistant force is. Faulting is the process by which this pressure forces the strata to continue their movement, often producing cracks in the involved strata, and causing earthquakes and tremors in the event of an intense pressure release.
-Ps Bri
(I don't mind if you give brainlyiest :))
Answer:
the answer is three
Explanation:
i took the test and it is correct