Please help me understand what I did wrong, Thanks

This is the diveristy of ecosystems natural communites and habits it is the variety of ways that species interact with each other and their environment

What is a gene ? a) a section of a protein that codes for dna. b) the alternate version of a trait. c) the visible trait in the f1 generation. d) a section of dna that codes for a specific trait .

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?