Hello there! ;)
<span>Which sentence is the correctly written compound sentence?
Answer:
</span><span>D. The study of weather can be traced back to ancient India and ancient Greece.</span>
Answer:
A flying car is a type of personal air vehicle or roadable aircraft that provides door-to-door transportation by both ground and air. The term "flying car" is also sometimes used to include hovercars.
Flying car - Wikipedia
Sternly, maybe could just be grim ( formiadable, harsh, uninviting, depressing, lack of humor, etc)
The language features are effective as they are descriptions which give readers and image in there mind to imagine the situation. To answer the questions write down what image they would create in your mind, or what the sentence is telling you. Hope this will help you.