How is water involved in making NADPH and ATP?

Would really appreciate it, i have an idea but not completely sure

What would happen if the krill were removed from the food web

The carbon cycle is best defined as a process in which a. carbon changes from inorganic forms to organic forms and back b. carbon is changed into other elements such as oxygen or nitrogen c. carbon is continually created from the sun’s energy by plants d. carbon is consumed and regenerated from other elements such as oxygen and nitrogen