Your answers are Science and People. "The effect of pollution on fish" is the only answer choice that is not too vague to write about or to discuss. Hope this helped!
I think it should be main idea.
The troposphere is the lowest level of the atmosphere, so it is in contact with the Earth's surface. In contrast, the stratosphere is located above the troposphere, so it is not in contact with the Earth's surface. ... The air density and air pressure are much lower in the stratosphere.
When news stations were talking about the immigrant families being separated from children can be very biased because some news anchors support Trump in whatever he is doing and other do not support him or agree with what he is doing it can be problematic because the news anchors in favor of trump will only talk about the good things about him meanwhile the ones opposed to him will talk about bad things about him
