NEEDS OF ORGANISMS All organisms need more then just Energy 95 percent of body is made up of just 4 elements: Hydrogen Oxygen Nitrogen Carbon.
Chapter 41 Lecture Animal Nutrition. CHAPTER 41 ANIMAL NUTRITION Copyright © 2002 Pearson Education, Inc., publishing as Benjamin Cummings Section A:
I. Biogeochemical cycles
Cycles of Matter
AP Biology
Ecology- background
BIOGEOCHEMICAL CYCLES
