Answer:
its the first option.
Explanation:
We have not much idea of what Dark Energy is. It is believed to be the force that is behind the expansion of the universe.
Answer: Absolute brightness is the actual amount of light produced by the star, whereas apparent brightness changes with distance from the observer.
Explanation:
I hope this helps, have a good night :) <3
It becomes brighter because, THE CORE CONTRACTS, RAISING THE TEMPERATURE AND EXTENDING THE HYDROGEN BURNING SHELL OUTWARD. This stage is called the hydrogen shell burning phase and during this phase the star grows luminous.
Between the 1870s and 1900, Africa faced European imperialist aggression, diplomatic pressures, military invasions, and eventual conquest and colonization. At the same time, African societies put up various forms of resistance against the attempt to colonize their countries and impose foreign domination.
Answer:
Depression in the middle refers to basin whereas circular shape at the middle denotes dome.
Explanation:
If this large bullseye structure has depression in the middle and the sides are higher than the middle region so it is known as basin while on the other hand, if this large bullseye structure has rounded uplifted landform so we can say that it is a dome. The structure of basin looks like a bowl which has low length at the middle and higher length at the bottom whereas dome has circular surface having sides of low height and middle is more in height.
