I need help on 11.2 and 11.3

Which of the following will not cause mass extinction? a. drastic change is weather b. geological change c. both a and b d. none of the above

Where can you find prokaryotic and eukaryotic cells?

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.