Please help me with this problem I'm confused.

Ascientist and her team counted 200 individual deer in an area of 10 square kilometers. what is the population density?

Which statement correctly describes a way that mutations increase the likelihood that a species will survive in a changing environment

Which of these has happened to your food by the time it reaches your small intestine? a. all the macromolecules have been broken down completely. b. lipids and starches have been partially broken down. c. starches and proteins have been partially broken down. d. proteins and lipids have been broken down into subunits.