Mention different divisions of cryptogames

I’m doing some practice exam questions for biology, and i’m not sure how to do these 3 parts to the question.

White-tailed deer are considered to be an overpopulated species in the central united states. which of these events probably contributed the most to white-tailed deer exceeding their carrying capacity?

Which of the following statements about protists are true? a.they are typically found in moist environments. b.they are all unicellular. c.they have a nucleus. d.they are all multicellular.