What are biotic and abiotic factors?

What are the abiotic and biotic factors in a biosphere that was made by me?

• i have a few worms and tadpole and plants inside of it but i still don't get the abiotic and biotic factors....i also need to describe the photosynthesis and food pyramid including the 90% rule which i also don't understand...any help about these thing would be great!

• Answer:

  abiotic= non-living: Soil, air, water, rocks... bitoic= living: worms, tadpoles, fungi, bacteria... The 90% rule says that 90% of energy is lost at each level of the pyramid. So only 10% of the light entering your ecosystem will be used in photosynthesis. Of this, only 10% will enter the primary consumer (herbivore). Of this, only 10% will go into the secondary consumer (carnivore), and so on.