Which of the following is an example of a biotic factor depending on an abiotic factor? 1Lions depending on gazelle for food.

2Trees depending on fungi to break down dead things in the soil.

3Fish depending on water for a habitat and for oxygen.

4Rabbits depending on grass for food.

The greenhouse effect a. something that has occurred for millions of years b. an unnatural phenomenon caused by humans that maintains earths temperature range. c. the results of the differences in the angle of the suns rays d. an unnatural phenomenon that causes heat energy to be radiated back into the atmosphere