Choose the two sentences that represent the central ideas in the passage. A. Sharks have tens of thousands of teeth.

B. Many of people's ideas about sharks are not fact-based.

C. Sharks use body language to communicate with each other.

D. Some facts about sharks seem too strange to be true.

E. Sharks are predators in a marine ecosystem.

B and D

Explanation:

While the other choices may be true, B and D are the overall central ideas that wrap these all up.

what are the choices?

in ray bradbury's short story "a sound of thunder", mr. eckels's fearfulness leads to drastic consequences for the rest of the world.

in the story, mr. eckels, who is a hunter, hires a time travel company to travel to the age of dinosaurs. although he is excited for the hunting expedition at the beginning, when they reach there and mr. eckels sees the tyrannosaurus, he feels frightened. as he is afraid of the tyrannosaurus, he steps off the path although he has been warned not to do it. by stepping off the path, the entire course of the future is affected: mr. eckart alters the future by stepping on a butterfly, which causes a new man to be elected president in the future. in that way, it is mr. eckart's fearfulness what triggers 'the butterfly effect' and what leads to drastic consequences for the rest of the world.