I’m presuming the last one is supposed to be bias, but that’s the one that has a negative connotation to it.
One has to fall to build and grow the war. currents of water help the pine tree grow, so the pine is the war and the deaths are the currents
To get an education which earns us money
While the main idea is usually in the first sentence, the next most common placement is in the last sentence of a paragraph. The author gives supporting information first and then makes the point in the last sentence. Here's a paragraph we can use as an example. Try to locate the topic and the main idea.
Answer: A plateau period is when you are in a place where nothing hasn’t moved concerning a situation.
Explanation: For example, someone can have a plateau in weight, where the scale isn’t moving up or down it’s just staying the same.