Singular- "earth's" is singular because its showing ownership
plural- "features" is plural because its saying that there is more than one feature of the earth
so u would answer it like this car =50MILES PER HOUR AND IN 30 MINUTES SPEEDS UP = 70 MPH U WANT TO FIND OUT IN THE 30 MINUTES HOW DID IT GO TO 50 TO 70 SO YOU 50+?=70
First, you might want to take some of your spelling into account, (ou, cloths). And I think the main problem with this is that there are too many short sentences. Try making compound sentences using conjunctions. It’s technically grammatically correct, and if you were to write like that on the SAT, it still technically would be counted as correct, but it’s good to get into the habit of using conjunctions when writing.
