How can i log into whenever i try to sign up it says we are sorry but we are not able to complete your registration at this time has anyone else had this problem? And how did they fix it?

These three organisms are interdependent on each other for their survival. what will happen if foxes are eliminated from the region? a. there will be more rabbits and less grass in the region. b. there will be more grass and fewer rabbits in the region. c. there will be fewer rabbits and less grass in the region. d. there will be more rabbits and more grass in the region.