If you eat a sandwich that has 100 units of energy, and 40 units are used by your cells, what accounts for the other 60 units of energy?

the first law of thermodynamics

the second law of thermodynamics

The skeletal system performs a variety of functions that are crucial to maintaining life processes. what function is performed in the bone marrow, but not in the ossified bones of the skeleton? a oxygen transportation c mineral storage b. muscle attachment d red blood cell production

Which phrase is the best summary of the model shown? a. the transfer of the sun's energy through trophic levels b. a series of aerobic and anaerobic reactions c. a transformation of light energy into chemical energy d. the breakdown of food molecules

What is a group of organisms that are closely related and share similar characteristics