Crocodiles can now be found in southern Florida.

Listen to the conversation, mark each statement as either True (T)or False (F)according to your listening.
W: Do you know there are crocodiles in the south of Florida? That’s amazing, right?
M: Really? But I remember that there were no crocodiles in this area, which I once learned in my science class! How could it be!
W: You know, things have changed. I’ve just read it from a science journal about crocodiles. It says the American crocodiles would be seen all over Florida if they are less susceptible to cold than American alligators.
M: Do you mean they are afraid of cold? But they live in water.
W: To some extent, it’s a true scientific fact.
M: You know, I’ve been wondering about the saltwater crocodiles since our last science class.
W: Talk to me. I’m kind of expert about crocodiles.
M: OK ... Is there a leader of something, like a crocodile king among them?
W: Interesting. Saltwater crocodiles live in loosely organized social groups. And they are also territorial with the best territory being held by the strongest male. However, territory is usually kept through posture and vocalizations and not violence. But, in my opinion, there is no such thing like the king of crocodiles.
M: I see. But they did live in a group, so how many of them there are in a group?
W: Usually about 10 or more, but less than 30.
M: Wow, I definitely will pass out if I see a group of them.