Ecosystems are made up of both abiotic and biotic factors. which of the following factors is considered biotic?
a
sand
b
bacteria
c
carbon dioxide
d
water

1. Energy from the sun is transferred to earth's surface. Some of that energy is then transferred to the air above the surface.

2. The closer a location is to the equator the more energy it receives from the sun. Therefore a location's air temperature is affected by its distance from the equator.

3. An effect my have more than one cause. These may be linked into a chain of effects and causes.