Answer: This is a guess, but possibly to match the scenery/imagery of the scene
Explanation: since the author is pointing out many tropical details, such as coconut white, mango yellow, or children jumping into waves, the author is driving more interest into there piece by saying cactus fence instead of just fence. Again, just a guess.
Answer: Caused to be a certain nature
Explanation:
If you replace the word “rendered” with “caused to be” the statement still makes sense. A good rephrasing would be:
The sad cries of the many slaves, horrible yesterday, are made worse by the joyous shouts that they hear.
"The Judges' combined score moved the competitor to the top of the scoreboard" is the correct response because in this case "Judges" is plural so the apostrophe is outside.