The present perfect refers to an act that took place in the past, from the perspective of the present. "I have eaten" means that at some point in the past, eating occurred. Now (at the present), it is over.
The simple present tells you about what's going on currently. "I eat" means that the act of eating is ongoing. (Though it can also refer to a habitual act; I may not be eating right at this instant, but it's the sort of thing that I could be doing right now, because the eating isn't complete.)
Answer:
Breath is seen as a noun (take a breath, do some deep breaths), while breathe is seen as a verb (just breathe, breathe from your chest for me)
Answer:
it was a racist/prejudice decision because Tom was African American, but they stood up when Atticus walked through because he did the best he could.
We are all equal, and there is no discrimination between us. We all have rights and can pursue happiness whenever we want. The people own these rights, not the government. The government will only cares about our safety and happiness. Did that help? Hope it did!
C. The sentence is wrong and doesn't make sense.