What are the two possible explanations for not seeing something glowing brightly along every line-of-sight in the sky? i. the universe is infinite in size and infinitely old, but dust absorbs starlight from far away stars. ii. the universe has a finite number of stars. iii. the universe is changing in some way as to prevent us from seeing an infinite number of stars. a) i and ii
b) i and iii
c) ii and iii
d) i, ii and iii

B. I and III

Explanation:

Options I and III are correct. We are not able to view stars at all points in the night sky due to the fact that the size of the universe is  infinite and the universe is made up of dust , gases, and matter. These components are able to trap starlight . Also the cosmos is constantly changing as there are interactions between bodies that make up the universe.

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.