Which of the following represents types of aquatic mammals from most aquatic to least aquatic

This is so important ugh its 25 points

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

Where substance is produced during cellular respiration