C. Flourine
<span>
Flourine is a pale yellow glass. It is the least dense and
the most active chemically. It displaces other halogens from their compounds
and also displaces oxygen from water. Bromine
is liquid with a dark red color. Chlorine is more dense and less reactive than fluorine.
It is a yellow-green gas. Iodine is a solid, grayish black in color and is the
least chemically active among the halogens. Among the nonmentals though, only
oxygen is more reactive than iodine. </span>
One way in which humans have modified the environment of Louisiana is by the building of levees.
<h3>How has humanity affected Louisiana's environment?</h3>
As a result of the constant flooding that hits Louisiana especially the deadly one that came with Hurricane Katrina, the government - both federal and state - have invested in the building of levees.
These levees are meant to channel floodwater away from populated areas and therefore protect Louisiana's population from flooding. They have however affected the way the environment of Louisiana looks.
Find out more on Levees at brainly.com/question/1104575
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All of the above I guess, although there’s so many different things. If you can put more I’d say the battle of Midway
D. Spanish
The Spanish landing in Mexico and Central America in the 1500's, approximately 100 years before the English arrived.