The correct answer is B.
The first two sentences are establishing characteristic shared by both petroleum and coal. The word "however" is used to contrast the similarities already presented with the differences that will be stated in the following sentences.
The prehistoric reptiles known as dinosaurs arose during the Middle to Late Triassic Period of the Mesozoic Era, some 230 million years ago. They were members of a subclass ofreptiles called the archosaurs (“rulingreptiles”), a group that also includesbirds and crocodiles.
Thanks!
Answer:
That sucks. They must have been bad quality. You should get a refund
Answer: maybe search them up
Explanation:
