why is unity an important feature of a successful paragraph?

Based on context, the word “insoluble”most likely means?

Then she heard his step on the stair away down on the first flight, and she turned white for just a moment. the phrase "she turned white for just a moment" is mainly used to show that della has very fair skin. is afraid of jim's reaction. is beginning to get an illness. had become extremely angry.

Nthe final analysis, the government has not done enough to protect the endangered species of the rain forest. in the passage above, the transition in the final analysis is used to