2. An organism that feeds on plants and animals?
  a) Carnivore
   b) Omnivore
  c) Epiphyte
   d) Herbivore

3. All of the following are abiotic factors except:
  a) Tree
              b) Temperature
c) pH
       d) Sunlight

4. Corals would be found in which zone:
  a) Oceanic
  b) Estuary
c) Neritic
  d) Benthic

5. Which of the following is not part of the nitrogen cycle:
     a) Ammonification
   b) Transpiration
c) Nitrification
     d) Rhizobacteria