Answer:
Both texts are factual, expository texts, whose purpose is to teach you about crocodilians and their lives and reproductive systems. Expository texts have the purpose of teaching you about the facts about something, in this case, crocodilians - they should inform you about them.
When it comes to signal words, they are there to identify relationships between words (for example, addition or contrast).
In text 1, some signal words are: all, and, throughout, almost, there, etc.
In text 2, some signal words are: recently, where, prior to, after, in, that, finally, for, etc.