Read the details described in "black hole beginnings."
what is the correct order of the cause-and-effect chain
1. the plasma slows down and grows weak.
2. the nuclear reactions stop
3. the center of the star caves in
4. the star's center begins to cool.
1-2-3-4
2-4-1-3
2-3-1-4
3-1-4-2

Explain how lines 1-3 establish the speaker as an individual but also as a representative for all others.

Which statement is the best summary of the theme in this passage? people almost always disappoint their family members. working hard and being honest leads to long-lasting rewards. showing strength in a crisis makes problems easier to overcome. unintentional betrayal can lead to severe consequences

Wha is the topic discussed in “lifeboat ethics” ?